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Tinning

Tinning is the industrial process of applying a thin layer of tin to the surface of base metals, primarily iron or steel, to provide corrosion resistance, improve solderability, and enhance aesthetic finish.^[1]^[2] Originating in 14th-century Europe with the coating of hammered iron sheets in regions like Bavaria, the technique evolved through hot-dip methods in the 17th and 18th centuries before transitioning to electrolytic deposition in the 20th century for efficient, uniform tinplate production.^[3] Tinplate, the primary output of tinning, remains essential for food and beverage packaging due to tin's non-toxicity and barrier properties against oxidation, while broader applications span electronics for component protection, soldering wires to prevent oxidation, and hardware fasteners for durability.^[4]^[5] Though alternatives like organic coatings have reduced tinplate dominance in canning since the late 20th century, tinning persists in niche high-reliability sectors owing to its proven electrochemical stability and low toxicity.^[1]^[5]

Fundamentals

Definition and Purpose

Tinning is a metallurgical process that applies a thin layer of tin, typically 2-15 micrometers thick, to base metals such as wrought iron, steel, or copper through methods like electrolytic deposition or hot-dipping, forming a metallurgically bonded or adhered coating.^[6] This coating leverages tin's electrochemical nobility relative to iron (standard reduction potential of Sn²⁺/Sn at -0.14 V versus Fe²⁺/Fe at -0.44 V), enabling it to function primarily as a barrier that inhibits oxygen and moisture access to the substrate, thereby preventing oxidation and rust formation in neutral or mildly acidic environments.^[7] Unlike sacrificial coatings such as zinc, which corrode preferentially to protect the base metal galvanically, tin provides protection through physical isolation, though breaches in the layer can accelerate substrate corrosion due to tin's cathodic nature.^[8] The primary purposes of tinning include enhancing corrosion resistance for prolonged material durability, particularly where aesthetic finish and electrical conductivity are required, as tin resists tarnishing and maintains low contact resistance.^[9] It also improves solderability by offering a surface with a melting point around 232°C that wets readily with tin-lead or lead-free solders, preserving the base metal's joinability over time without oxidation interference.^[7] For applications involving food contact, tin's empirical low toxicity—evidenced by minimal systemic absorption and absence of chronic effects at dietary levels below 200-300 mg/kg body weight—renders it suitable, contrasting with more reactive or toxic alternatives like lead, while its ductility (elongation up to 50% before fracture) ensures the coating deforms without cracking during sheet forming.^[10]^[11]

Chemical and Physical Principles

Tin adheres to ferrous substrates primarily through the formation of intermetallic compounds, such as FeSn₂, during the wetting process, where molten tin reacts with iron to create a diffusion layer that enhances bonding and prevents dewetting.^[12] This intermetallic phase grows via solid-state diffusion above tin's melting point, with kinetics following parabolic growth laws governed by atomic mobility in the Fe-Sn system.^[13] Tin's physical properties underpin its utility in coatings: it melts at 231.93°C, enabling low-temperature application, exhibits high ductility and malleability for forming without cracking, and forms a passive SnO₂ oxide layer that confers resistance to atmospheric oxidation at ambient temperatures.^[14] In tinning, alloying elements or plating additives influence surface morphology; matte finishes, achieved via controlled current density or impurities, yield larger grains that reduce tin whisker formation compared to bright finishes, which promote finer grains and higher whisker risk due to compressive stresses from organic additives.^[15]^[16] In corrosion contexts, tin's position in the galvanic series—more noble than steel (E°Sn/Sn²⁺ ≈ -0.14 V vs. E°Fe/Fe²⁺ ≈ -0.44 V)—positions it as the cathode in aerated, near-neutral environments, where intact coatings shield steel while exposed areas corrode preferentially via accelerated anodic dissolution of iron, driven by the large cathode-to-anode area ratio.^[17] However, in acidic or deaerated conditions, such as those with organic acids, tin shifts to anodic behavior relative to steel, undergoing sacrificial dissolution to protect the base metal, as confirmed by elevated tin ion release and suppressed iron corrosion in such electrolytes.^[18] At coating defects like scratches, this galvanic coupling accelerates localized steel corrosion under cathodic control from tin, with breakdown exacerbated by oxygen reduction on the tin surface, following Faraday's laws where current density dictates penetration rates.^[19]

Historical Development

Origins and Early Techniques

The utilization of tin dates to the Bronze Age around 3000 BC, when it was alloyed with copper to produce bronze, yielding tools and artifacts with improved hardness and castability compared to pure copper.^[20] Pewter, an alloy predominantly of tin (typically 70-90%) with lead or other metals, emerged in ancient civilizations including Egypt and Rome by at least 1500 BC, serving for tableware and ornaments due to its low melting point and corrosion resistance.^[21] While these applications demonstrated tin's empirical value in mitigating oxidation through alloying, direct evidence of tin coatings on iron—tinning proper—appears absent in Bronze Age records, likely limited by iron's later widespread smelting around 1200 BC and the technical challenges of adhering tin to ferrous bases without modern fluxes.^[22] Tinning of iron cookware and sheets originated in medieval Europe, with the earliest documented practices in Bohemia during the early 11th century; by around 1020 AD, the technique spread to Saxony, supplying tinned ironware across the region.^[23] Artisans targeted iron vessels to prevent rust formation from acidic foods and moisture, a causal vulnerability of bare iron confirmed by its rapid oxidation in humid environments versus tin's inert nobility. This pre-industrial method relied on manual hot-dipping: wrought iron, first pickled in dilute acid or scoured to remove scale, was fluxed with grease to displace oxides, then immersed in small pots of molten tin at roughly 250°C—above tin's 232°C melting point to ensure flow without excessive iron dissolution.^[24] Post-immersion, workers withdrew the iron and wiped excess tin with hot grease or oiled rags to yield a uniform coating of 1-5 micrometers, minimizing material use while maximizing barrier protection; this wiping also prevented alloying at the interface that could embrittle the iron. The resulting tinned utensils exhibited empirically superior longevity, as tin's galvanic sacrifice corroded preferentially to the underlying iron, enabling multi-generational use in households where uncoated alternatives degraded within years. Early adopters in Bohemia and Saxony validated the process through iterative refinement, prioritizing causal efficacy over uniformity, as thicker coatings often flaked under thermal stress.^[24]

Industrial Expansion in the 18th-19th Centuries

The establishment of the first commercial tinplate mill in 1720 at Pontypool, South Wales, marked the onset of industrial-scale tinning in Britain, employing hot-rolled iron sheets as the base material rather than hammered sheets.^[25] This shift, alongside refinements in pickling to remove scale, bundle annealing to enhance ductility and uniformity, and improved fluxing agents, yielded tinplate of superior quality and consistency compared to imported German variants.^[25] These process innovations reduced production costs and spurred adoption by enabling reliable coating adhesion and corrosion resistance essential for emerging applications. Subsequent mills proliferated in South Wales, with Kidwelly Tin Works commencing operations in 1737, establishing the region as Britain's primary tinplate hub due to abundant local iron resources, water power, and coal proximity.^[26] By the early 19th century, domestic output displaced continental imports, supporting global exports as British tinplate gained market dominance. Economic drivers included rising demand from the canning industry, catalyzed by Nicolas Appert's 1810 thermal preservation method, which necessitated durable, airtight tin-coated containers for perishable goods, particularly for military provisioning during the Napoleonic Wars.^[27] ^[28] Tinplate production volumes expanded markedly through the century, reflecting mechanized rolling and scaling of hot-dip facilities; Welsh output, for instance, reached 6.3 million boxes annually by 1880, surging to 11.7 million by 1889 amid canning's commercialization.^[29] This growth, measured in standard boxes containing 112 to 450 sheets each, correlated directly with the proliferation of canned food exports, transforming tinplate from a niche coating into a cornerstone of food preservation infrastructure.^[30]

20th Century Mechanization and Scale-Up

The transition from batch-oriented pack mills, which involved annealing and rolling small packs of steel sheets, to continuous strip mills in the late 1920s marked a pivotal mechanization step in tinplate production, enabling the economical manufacture of longer, uniform steel strips for subsequent tinning.^[31] This shift addressed limitations in scale and consistency inherent to pack processes, where sheets were individually handled and hammered, yielding lower throughput and higher variability in strip quality. Electrolytic tinning lines, operational on a commercial scale in the United States from 1937, integrated with these strip mills to deposit tin via electroplating, allowing thinner and more uniform coatings than hot-dipping while reducing material waste.^[31] Flow-melt processes introduced in the 1930s within these lines melted the matte electrodeposited tin using electrical resistance or induction, producing a bright finish and a corrosion-resistant tin-iron alloy layer that improved reliability over unmelted deposits.^[32] Speeds in early electrolytic lines reached 270 feet per minute, scaling to 800 feet per minute by mid-century as engineering refinements enhanced process stability and defect rates.^[33]^[34] Post-World War II tin shortages accelerated the dominance of continuous annealing over batch methods, with lines like Japan's first in 1959 enabling inline heating and cooling of coils to achieve superior metallurgical properties and yields.^[35] These advancements doubled tinplate output per unit of tin consumed compared to pre-war hot-dip processes, as electrolytic methods minimized excess coating and drainage losses.^[36] Tin coating weights, historically averaging 3 pounds per base box in early applications, declined to under 1 pound per base box by the 1970s through optimized deposition and empirical corrosion testing, correlating with reduced waste and sustained protective performance.^[37]^[38]

Base Metal Preparation

Production of Sheet Steel and Iron

The production of sheet steel and iron serves as the foundational step for tinplate substrates, requiring materials with precise metallurgical properties to ensure uniform coating adhesion during tinning. Historically, early tinplate relied on wrought iron sheets produced via pack rolling, where multiple iron sheets were bundled and hammered or rolled together to achieve thin gauges of approximately 0.3-0.5 mm; however, the inherent porosity and slag inclusions in wrought iron often led to inconsistent tin adhesion and coating defects due to trapped impurities disrupting the iron-tin interface.^[25] This transitioned in the late 19th century with advances in steelmaking, such as the Bessemer process introduced in 1856, which enabled the production of purer low-carbon steels, progressively replacing wrought iron by the early 20th century for superior homogeneity and reduced inclusions that could otherwise cause pinholes or delamination in tin coatings.^[39] In contemporary manufacturing, low-carbon steel (typically 0.04-0.12% C) is produced via basic oxygen steelmaking in electric arc or integrated mills, followed by continuous casting into slabs, hot rolling to intermediate thicknesses, and cold reduction in continuous strip mills to final gauges of 0.13-0.50 mm, ensuring tight tolerances in thickness uniformity (±0.005 mm) critical for downstream formability and coating consistency.^[25]^[38] These mills employ multi-stand tandem configurations operating at speeds up to 20 m/s, reducing hot-rolled strip by 70-90% in a single pass while maintaining flatness through work roll bending and lubrication, which directly influences the substrate's surface topography and its causal role in preventing tin whisker formation or uneven deposition.^[40] To optimize coating integrity, killed or stabilized low-carbon steels are prioritized, where deoxidants like aluminum (0.02-0.05%) fully react with oxygen during solidification, minimizing non-metallic inclusions (e.g., alumina clusters <5 μm) that could nucleate voids at the steel-tin interface and degrade adhesion under mechanical stress or corrosion exposure.^[38] Temper rolling, a final light cold reduction (0.5-2%), imparts a controlled surface finish (Ra 0.5-1.0 μm) and yield strength (200-300 MPa), enhancing the substrate's deep-drawing capability for can fabrication while promoting mechanical interlocking with the tin layer.^[41] Empirical data from steel quality assessments confirm that such specifications reduce coating failure rates by over 50% compared to higher-inclusion wrought iron precursors, underscoring the metallurgical evolution's impact on tinplate durability.^[25]

Surface Cleaning and Pickling Processes

Surface cleaning and pickling prepare steel sheets for tinning by removing mill scale, oxides, rust, and residual oils, ensuring a contaminant-free surface that promotes uniform tin adhesion.^[25] Pickling typically employs hydrochloric acid (HCl) or sulfuric acid (H2SO4) solutions, with HCl preferred for carbon steel strips due to faster reaction rates and reduced base metal attack compared to H2SO4.^[42] ^[43] In continuous processes, steel strips pass through acid baths where they are often made anodic to facilitate oxide dissolution and surface etching, enhancing subsequent tin deposition without excessive hydrogen absorption.^[25] Following acid pickling, thorough rinsing with water removes acid residues and dissolved impurities, preventing carryover that could compromise tin coating quality.^[44] Electrolytic cleaning then addresses organic contaminants like rolling oils, using alkaline solutions with direct current to dislodge soils via anodic or cathodic action; anodic mode generates hydrogen bubbles for mechanical scrubbing, while cathodic promotes saponification of fats.^[45] ^[46] This step, often conducted at elevated temperatures around 70°C with high-pressure sprays, ensures complete degreasing before final water rinsing.^[32] Surface cleanliness is empirically verified through wettability assessments, such as contact angle measurements, where low angles (indicating good spreading of test liquids like water or simulated tin melts) confirm oxide-free conditions for optimal tin wetting.^[47] Over-etching during pickling must be avoided to minimize hydrogen embrittlement, where atomic hydrogen diffuses into the steel lattice, reducing ductility and increasing fracture risk under stress; controlled acid concentrations and exposure times, typically below 5-10% HCl at ambient temperatures, mitigate this by limiting hydrogen generation and uptake.^[48] ^[49] In preparations for hot-dip tinning, fluxing agents—such as ammonium chloride or zinc chloride mixtures—are applied post-cleaning to displace residual moisture and inhibit re-oxidation during immersion, enabling direct contact between the steel and molten tin bath.^[50] These chloride-based fluxes, used at concentrations of 10-35% in formulations, promote clean interfaces without introducing smut or inclusions that could defect the coating.^[50]

Tinning Techniques

Hot-Dip Tinning

Hot-dip tinning involves immersing continuously fed steel strip into a bath of molten tin maintained at temperatures of 260–280 °C, allowing the tin to wet and coat the substrate through capillary action and gravitational flow.^[51] Upon withdrawal, excess tin is mechanically removed via wiping with palm oil or grease, which regulates coating mass to 3–12 g/m² per side while preventing oxidation and promoting a smooth, bright surface.^[25] ^[52] This traditional immersion method, dating to the 19th century, relies on empirical control of dipping speed, bath chemistry, and wipe pressure for uniform application, yielding thicker coatings than electrolytic alternatives.^[53] The process inherently induces self-alloying via diffusion at the steel-tin interface, forming a thin intermetallic layer predominantly of FeSn₂ (up to 1–2 μm thick), which bonds the pure tin overlay and provides inherent solderability without post-treatment annealing.^[51] This alloy layer, controlled by flux additives such as zinc chloride (Sn-Zn compounds) or organic palm grease to limit growth and avoid brittleness, contributes to the method's simplicity and durability for demanding environments, though it can lead to variable aesthetics if not optimized.^[54] The bright finish results from flow lines in the wiped tin, enhanced by the alloy's matte underlayer contrasting the specular overlay. Suited for heavier-gauge steel (e.g., >0.3 mm thick) where robustness trumps precision, hot-dip tinning excels in applications requiring empirical corrosion barriers over fine uniformity, such as early food canning where coatings of 5–11 g/m² per side protected against acidic contents.^[25] ^[55] Largely supplanted by electrolytic tinning post-1930s for its scalability and thin-film control (down to 0.5 g/m²), hot-dip remains viable for niche heavy-duty uses like wire or specialty sheets, offering >90% material utilization in optimized batch or semi-continuous lines due to recyclable dross recovery.^[53]

Electrolytic Tinning

Electrolytic tinning deposits a thin layer of tin onto steel strip via electrodeposition in an electrolytic cell, where the steel serves as the cathode and soluble tin anodes dissolve to replenish the bath. The process predominates in modern tinplate production due to its ability to achieve precise, uniform coatings on continuous high-speed lines. Common electrolytes include alkaline stannate solutions (sodium or potassium stannate at 25-35 g/L Sn) operating at 60-80°C or acidic fluoborate baths (75-115 g/L Sn fluoborate with 50-150 g/L fluoboric acid) for matte deposits.^[7]^[4]^[56] Cathode current densities typically range from 10-30 A/dm², enabling deposition rates that yield tin coatings of 0.5-15 g/m², with thickness controlled by line speed and current per Faraday's first law of electrolysis, which states that the mass deposited is proportional to the quantity of electricity passed (m = (Q / nF) × M, where Q is charge, n is electrons transferred, F is Faraday's constant, and M is molar mass).^[57]^[58] This electrochemical control ensures uniform thickness across the strip width, contrasting with variable alloy layers in hot-dip methods and reducing excess tin usage.^[25] Deposits are often produced as matte finishes in baths without organic brighteners, offering superior solderability and lower internal stresses for applications like electronics.^[59]^[60] Alternatively, flow-brightening involves post-plating heating of matte tin to 230-240°C, melting the pure tin layer (melting point 232°C) to reflow it into a smooth, specular surface that enhances appearance and corrosion resistance while mitigating tin whisker risks through stress relief.^[61]^[62] Since commercialization in the 1930s, electrolytic lines have scaled dramatically, with global tinplate production—nearly all electrolytic—reaching 14-18 million metric tons annually by the 2010s, supporting efficient output for packaging demands.^[63]^[25]

Specialized Methods like Immersion Tinning

Immersion tinning, also known as displacement tinning, involves a chemical replacement reaction where tin ions in an acidic solution displace copper atoms from the substrate surface, forming a thin, uniform layer of pure tin without requiring an electric current.^[64] This process is primarily applied to copper traces on printed circuit boards (PCBs) to enhance solderability and protect against oxidation.^[65] Typical coating thicknesses range from 0.5 to 1.5 micrometers, with industry standard IPC-4554 specifying 1.15 to 1.3 micrometers (46 to 52 microinches) to balance performance and cost.^[64]^[66] The method avoids the environmental and operational drawbacks of electrolytic processes, such as waste generation from anodes and the need for precise current control, enabling simpler, lower-cost application in electronics manufacturing.^[67] However, the resulting pure tin layer is limited in thickness due to the self-limiting nature of the displacement reaction, making it unsuitable for applications requiring thicker coatings.^[68] Post-2000 adoption increased with RoHS directives mandating lead-free compliance, as immersion tin provides a flat, Pb-free surface compatible with higher-temperature lead-free solders like SAC alloys, preserving solder joint integrity.^[69]^[66] Other specialized techniques include brush plating, a selective electroplating variant using a handheld anode wrapped in absorbent material saturated with electrolyte, applied for localized tin deposits in repairs or hard-to-reach areas on electronic components.^[70]^[71] This portable method allows precise tinning without full immersion, reducing material use and enabling on-site maintenance, though it demands skilled operation to ensure uniformity.^[72] Vapor deposition methods, such as physical or chemical vapor deposition, are less common for tin but used in niche high-vacuum applications for ultra-thin, conformal coatings on sensitive electronics, offering atomic-level control absent in wet processes.^[6] A key concern with immersion tinning is the risk of tin whisker growth—spontaneous, conductive filaments forming on pure tin surfaces under stress, potentially causing short circuits in high-reliability electronics.^[67] Mitigation strategies include alloying the tin with elements like bismuth or indium to disrupt crystal lattice formation, though this alters the pure displacement mechanism and requires process adjustments; alternatively, underlayers like nickel barriers or post-plating annealing at 150°C for one hour can reduce internal stresses promoting whiskers.^[73]^[74] Empirical data from accelerated aging tests show alloyed variants exhibit up to 90% lower whisker propensity compared to pure tin after 4000 hours at 50°C and 50% RH.^[75]

Applications

Food Packaging and Tinplate

Tinplate serves as the predominant material for manufacturing food and beverage cans, accounting for the largest application segment in the global tinplate market, with food and beverage cans comprising over 40% of total usage.^[76]^[77] This dominance stems from tinplate's ability to form lightweight, durable, and hermetically sealable containers that protect contents from light, air, and microbial contamination, thereby enabling safe distribution and storage.^[78] In the food can sector specifically, tinplate holds approximately 70% market share, underscoring its entrenched role in preserving perishable goods like fruits, vegetables, meats, and beverages.^[79] The introduction of tinplate cans in the early 19th century revolutionized food preservation, extending shelf lives from months—limited by earlier methods such as drying, salting, or glass bottling—to several years under ambient conditions, which facilitated military provisioning, global trade, and urban food security.^[80] This empirical advancement reduced spoilage rates dramatically; for instance, pre-canning era alternatives often failed to maintain nutritional integrity beyond seasonal cycles, whereas tinplate containers routinely achieve multi-year stability when properly processed and sealed.^[81] Global tinplate production supports this application, reaching approximately 30 million tons in 2023, with ongoing output in the 2020s reflecting sustained demand for reliable packaging amid population growth and supply chain extensions.^[79] To mitigate interactions between the tin coating and food components, particularly sulfur-containing proteins that can cause black sulfide staining on inner surfaces, manufacturers apply organic lacquers or polymer coatings post-tinning.^[82] These barriers prevent direct contact, preserving product appearance and flavor while maintaining the tin's sacrificial corrosion protection for the underlying steel.^[83] Regarding safety concerns over potential tin migration into foodstuffs—especially in acidic or protein-rich contents—regulatory assessments by bodies like the FDA and EU confirm compliance with migration limits; lacquered tinplate typically exhibits dissolution rates below permissible thresholds, such as under 150 mg/kg in tested scenarios, rendering it suitable for direct food contact without significant health risks.^[84]^[85] Empirical data from food surveys indicate that while un-lacquered plain tinplate may exceed 150 mg/kg tin in rare cases (affecting about 4% of surveyed cans), modern lacquered variants consistently fall within safe bounds established by international standards.^[84]

Electronics and Electrical Components

Tinning of copper wires and busbars applies a thin layer of tin to the exposed metal surfaces, preventing oxidation and corrosion while enhancing solderability for reliable electrical interconnections in electronic assemblies. This process preserves the conductivity of the base metal and reduces contact resistance, as tin's low melting point facilitates strong, low-resistance solder joints. In applications such as wiring harnesses and power distribution components, tinned conductors maintain performance under varying environmental conditions, including elevated temperatures and humidity.^[86]^[4]^[87] On printed circuit boards (PCBs), immersion tin serves as a lead-free surface finish for copper pads and traces, depositing a uniform, thin tin layer (typically 0.8–1.2 micrometers) that promotes excellent solder wetting and coplanarity, outperforming hot air solder leveling (HASL) for fine-pitch surface-mount devices by providing a flatter profile less prone to bridging during assembly. This finish ensures consistent solder joint formation and extends shelf life by protecting against copper oxidation prior to soldering. Compliance with the RoHS directive, effective from July 1, 2006, has driven adoption of such pure tin processes to eliminate lead from electronics manufacturing, aligning with restrictions on hazardous substances while supporting lead-free soldering alloys like tin-silver-copper.^[88]^[89]^[90] Despite these benefits, pure tin finishes exhibit reliability risks from spontaneous whisker growth—filamentary tin crystals that emerge over time, potentially shorting adjacent circuits and causing intermittent or catastrophic failures. NASA investigations have linked tin whiskers to power system anomalies in multiple satellites, including complete losses of Galaxy VII (launched 1993, failed 1998) and Iridium 33 (partial impact), with documented cases from the 1990s onward highlighting the issue in high-reliability aerospace electronics where whiskers bridged high-voltage components after years of dormancy. Mitigation strategies, such as alloying tin with bismuth or applying conformal coatings, are often employed to suppress whisker formation, though pure immersion tin remains challenged in mission-critical applications due to unpredictable growth under stress.^[91]^[92]^[93]

Industrial and Other Uses

Tin plating is applied to industrial equipment, including processing tanks and chemical vessels, to provide corrosion resistance in neutral or mildly aggressive environments, thereby protecting base metals like steel from oxidation and extending operational durability.^[5]^[94] In food processing facilities, tin-coated components such as vats and machinery parts benefit from the coating's non-toxicity and barrier properties, reducing maintenance needs in humid conditions.^[5] Historically, tinning served roofing and guttering applications, with tin-plated iron sheets rolled and soldered into seamless coverings that resisted weathering; these materials gained prominence in the 19th century for buildings in North America, offering longevity superior to uncoated alternatives in exposed settings.^[95]^[96] Terne-plated sheets, an alloy variant of tin and lead, further enhanced waterproofing for such architectural elements until the mid-20th century.^[97] In niche industrial contexts, tin plating coats hardware, fasteners, and select battery components to improve wear resistance and conductivity, while minor applications include protective layers on precision instruments where solderability is required.^[5]^[98] Corrosion tests indicate that tin coatings can extend the service life of steel substrates in humid environments by 2-5 times relative to bare metal, depending on coating thickness and exposure severity.^[99]^[100]

Advantages and Limitations

Corrosion Resistance and Solderability Benefits

Tin coatings act as a sacrificial barrier on steel substrates, primarily through the formation of a thin, adherent oxide layer (SnO₂) that passivates the surface in environments with pH between 4 and 10, inhibiting anodic dissolution and cathodic reduction reactions.^[101] This passivity arises from the low solubility of tin oxides in neutral to mildly acidic or alkaline conditions, preventing direct contact between the underlying ferrous material and corrosive agents like oxygen, water, or mild acids typically encountered in food packaging or atmospheric exposure. In highly acidic (pH < 4) or strongly alkaline (pH > 10) media, this protection diminishes as the oxide dissolves, exposing tin to active corrosion via Sn(II) intermediates and hydrogen evolution.^[101] Empirical assessments, such as salt spray tests (ASTM B117), demonstrate tin-plated steel's superior durability, with coatings often maintaining integrity for hundreds of hours before base metal corrosion becomes evident, far exceeding bare steel's rapid failure within tens of hours due to unchecked rust formation.^[102] This extended resistance stems from tin's ability to cathodically protect steel at coating imperfections until the tin is depleted, delaying pitting and general corrosion. For solderability, tin's intrinsic properties enable low contact angles (<30°) during wetting by molten solders like Sn-Pb or lead-free alloys, facilitating rapid spreading and strong metallurgical bonds without flux-intensive preparation, even after prolonged storage.^[103] This is due to tin's compatibility with solder compositions, where its oxide layer reduces readily at soldering temperatures (around 250°C), promoting intermetallic formation (e.g., Cu₆Sn₅) for reliable electrical and mechanical joints in components like connectors.^[104] In packaging applications, these corrosion and solderability advantages combine to lower lifecycle costs by enhancing product shelf life and fabrication efficiency, with tinplate's durability reducing replacement needs compared to uncoated alternatives.^[105]

Economic and Performance Drawbacks

Tinning processes incur substantial economic costs due to the volatility of tin prices, which reached a peak of $51,000 per metric ton in March 2022 amid supply disruptions before declining significantly later that year.^[106] This fluctuation exposes manufacturers to risks, as tin constitutes a major input for tinplate production, amplifying expenses during price spikes driven by geopolitical tensions and demand from electronics sectors.^[106] Supply chain vulnerabilities further compound economic drawbacks, with Indonesia accounting for approximately 26-30% of global tin production, making the market susceptible to regional policy changes such as the 2025 crackdown on illegal mining that disrupted exports and pushed prices above $37,500 per metric ton.^[107] ^[108] ^[109] In terms of performance, electrolytic tinning demands notable energy input, with estimates for coated steel production ranging from 2-4 kWh per ton, contributing to higher operational costs compared to uncoated alternatives.^[110] Tin coatings exhibit limitations in acidic environments, where unprotected tinplate can dissolve, leading to metal migration into food contents and potential spoilage unless supplemented with lacquers.^[111] Pores or defects in the tin layer enable undercutting corrosion, where underlying steel corrodes preferentially, compromising long-term durability in applications like canning.^[4]

Specific Criticisms Including Tin Whiskers

Tin whiskers are filamentary crystals of pure tin that grow spontaneously from tin-plated surfaces, typically reaching lengths of 1 to 10 mm over periods of months to years, and can cause electrical short circuits by bridging adjacent conductors.^[112] These whiskers form due to internal stresses in the tin deposit, exacerbated by compressive forces during plating or substrate deformation, with empirical observations showing higher growth rates in pure tin compared to tin-lead alloys containing as little as 3% lead, which suppress whisker formation by disrupting the tin lattice.^[15] Documented failures include the 1986 recall of heart pacemakers, where tin whiskers from pure tin-plated crystal oscillator housings shorted circuits, leading to complete loss of output pulse; similar whisker-induced shorts have caused relay failures in military aircraft via metal vapor arcing.^[112]^[113] Mitigation strategies such as conformal coatings, including acrylic, polyurethane, and parylene types, can suppress whisker growth, contain emerging filaments, and prevent bridging shorts, but do not eliminate the risk entirely, as whiskers have been observed penetrating coatings under accelerated stress conditions like high humidity and temperature.^[114] Studies indicate that coatings with thicknesses of 25 microns or less and lower modulus materials offer partial protection, yet empirical tests reveal breakthrough failures, underscoring that reliance on coatings alone underestimates long-term reliability hazards in high-stakes applications like electronics.^[115] Another criticism involves tin pest, the allotropic transformation of white β-tin (tetragonal structure, ductile) to gray α-tin (cubic structure, brittle) below 13.2°C, which increases volume by about 27% and causes cracking or disintegration of tin coatings or objects.^[116] This phase change proceeds slowly via nucleation at defects, with empirical data from cold storage experiments showing propagation rates of millimeters per year in pure tin, posing risks to tin-plated components in cryogenic or polar environments despite alloying delays.^[117] Historically, early tinning processes using tin-lead solder alloys for sealing food cans led to lead contamination, as evidenced by elevated lead levels in preserved foods from 19th-century expeditions, such as the 1845 Franklin Arctic voyage where autopsies revealed lead poisoning contributing to crew deaths via solder dissolution in acidic contents.^[118] Such practices persisted until regulatory bans, like the U.S. FDA's 1995 prohibition on lead solder in cans, highlighting how alloy choices prioritized solderability over purity but introduced toxicity risks absent in modern pure tin alternatives.^[119]

Alternatives

Inorganic Coatings and Substitutes

Electrolytic chromium-coated steel (ECCS), commonly referred to as tin-free steel (TFS), emerged in the 1960s as a cost-effective inorganic alternative to tinplate for steel sheet applications, particularly in food packaging.^[120] This coating consists of a metallic chromium layer overlaid with a chromium oxide film, applied via electrolytic deposition, resulting in a total thickness approximately 10 times thinner than conventional tin coatings—typically 0.1 to 0.2 micrometers versus 2 to 5 micrometers for tin.^[121]^[122] The reduced coating weight lowers material costs, as chromium is less expensive than tin, while maintaining steel's formability for can production.^[123] However, ECCS provides inferior inherent corrosion resistance to tinplate without additional protection, necessitating a lacquer or varnish overcoat to prevent steel exposure to contents, especially in acidic or sulfur-containing foods.^[124] With proper overvarnishing, TFS achieves shelf lives equivalent to tinplate, as validated by industry testing for products like beverages and vegetables, though it demands precise application to avoid defects like filiform corrosion.^[121] TFS has gained substantial adoption, comprising a significant portion of steel can production—over 20% in key markets by the 2020s—driven by economic pressures and tin price volatility.^[125] Zinc and zinc-aluminum alloy coatings, applied through hot-dip galvanizing or similar processes, offer another inorganic option via sacrificial anodic protection, where the coating corrodes preferentially to shield the underlying steel.^[4] These alloys, often containing 55% aluminum in Galvalume variants, excel in atmospheric and outdoor durability but exhibit poorer performance for food contact due to zinc's higher reactivity, leading to potential dissolution into contents and off-flavors or toxicity risks under acidic conditions.^[126]^[55] Unlike chromed steel, galvanized surfaces lack regulatory approval for unlined food packaging, limiting their use to non-contact industrial applications and highlighting trade-offs in biocompatibility versus broad corrosion resistance.^[127]

Organic and Polymer-Based Options

Epoxy-phenolic lacquers represent a primary organic coating alternative to traditional tinning, applied directly over steel or tin-free steel (TFS) substrates in food and beverage cans to form a protective barrier against corrosion and product-metal interactions. These thermosetting resins combine epoxy for flexibility and adhesion with phenolic components for chemical resistance and heat stability, enabling them to endure retorting temperatures up to 121°C without significant degradation. Their application has facilitated the use of thinner or absent tin layers, lowering material costs by reducing reliance on metallic coatings while maintaining adequate shelf-life protection for acidic or sulfur-containing foods.^[128]^[129] Despite these advantages, epoxy-phenolic lacquers exhibit causal limitations in long-term durability compared to tin, as their organic matrix lacks the sacrificial anodic protection provided by tin, which corrodes preferentially to shield steel. Mechanical damage, such as scratches from handling or processing, can penetrate the thin lacquer film (typically 5-10 micrometers), exposing steel to electrolytes and accelerating pitting corrosion under humid or aggressive conditions. Phenolic components also show sensitivity to ultraviolet exposure, potentially leading to embrittlement or barrier failure in externally coated applications, necessitating additional overcoatings for UV-exposed packaging. These drawbacks underscore a trade-off where cost savings—estimated at 20-30% per unit versus heavier tinplate—are offset by heightened vulnerability to physical abrasion and environmental stressors.^[130]^[131] Polymer laminates, such as polyethylene terephthalate (PET) films adhered to TFS or low-tin plate, offer enhanced barrier properties by combining the mechanical strength of metal with the impermeability of plastics to oxygen, moisture, and aromas. Lamination processes, often involving heat and adhesive bonding, yield composites with oxygen transmission rates below 1 cm³/m²/day, effectively preventing internal corrosion and flavor scalping in dry or low-moisture products. Adopted since the 1990s for two-piece drawn cans, these laminates support high-speed forming with minimal delamination risk under controlled conditions, further diminishing tin requirements in modern production. However, their durability remains inferior to homogeneous metallic tin coatings in high-impact scenarios, as laminate interfaces can separate under flexing or thermal cycling, compromising the barrier and inviting crevice corrosion. Scratch resistance is similarly limited, with surface abrasions disrupting the polymer layer and exposing underlying metal more readily than tin's self-passivating surface.^[132]^[133]

Material Shifts in Packaging

The adoption of aluminum for beverage cans accelerated in the 1960s following the introduction of the first all-aluminum beer can in 1959, driven by its significantly lighter weight—approximately one-third that of steel—which lowered shipping costs and enhanced consumer convenience compared to traditional tinplate containers.^[134]^[135] This shift reduced tinplate's dominance in single-use beverage packaging, as aluminum's infinite recyclability and high recovery rates (often exceeding 90% in closed-loop systems) further supported its scalability, despite primary production demanding 13-15 kWh per kg via energy-intensive electrolysis versus 5-7 kWh per kg for steel base in tinplate.^[136]^[137] Plastics, particularly PET bottles, and glass emerged as additional substitutes from the 1970s onward, with plastics favored for their low cost (often 20-30% cheaper per unit than metal) and moldability for non-carbonated drinks, while glass suited reusable premium markets due to perceived inertness.^[138] Life cycle assessments reveal nuanced trade-offs: virgin PET exhibits lower greenhouse gas emissions (around 2-3 kg CO2-eq per kg) than aluminum cans (4-5 kg CO2-eq per kg) or glass (6-10 kg CO2-eq per kg), attributable to plastics' lower production energy, though glass's higher transport emissions from weight (2-3 times heavier than metal equivalents) and plastics' dependence on fossil feedstocks elevate impacts when recycling rates lag below 50%.^[139]^[140] Tinplate endures in specialized beverage segments, comprising roughly 30% of the global canned beverages market as of 2024, particularly for premium and returnable applications where its formability—enabling deeper draws and complex shapes without cracking—and mechanical strength outperform aluminum's ductility limitations.^[138] This persistence stems from tinplate's barrier properties preserving flavor integrity in high-acid or carbonated premium products, alongside established infrastructure in regions like Europe and Asia for refillable steel systems that extend product life cycles beyond single-use alternatives.^[77]^[141] Annual global consumption exceeds 12 million tons for food and beverage cans, underscoring tinplate's role in niches prioritizing durability over weight savings.^[76]

Environmental and Health Considerations

Impacts of Tin Extraction and Processing

Tin extraction predominantly occurs through surface and alluvial mining in regions such as Indonesia's Bangka-Belitung islands and parts of Brazil, where global mine production reached approximately 300,000 metric tons in 2023.^[142] In Indonesia, tin mining has driven extensive deforestation and land degradation; for instance, Belitung Island lost about 10% of its remaining forests between 2001 and 2014 due to mining activities, with ongoing illegal operations exacerbating soil erosion and habitat loss.^[143] Tailings from tin ore processing in Brazil have caused severe pollution, contaminating soil, vegetation, surface water, and groundwater with toxic residues.^[144] The electrolytic tin plating process used in tinning generates acidic wastewater laden with divalent tin ions (Sn²⁺), which exhibit toxicity to aquatic life by disrupting biological processes and accumulating in sediments.^[145] ^[146] Electroplating operations overall contribute heavy metal effluents that require stringent treatment to prevent environmental release, as untreated discharges lead to bioaccumulation and ecosystem disruption.^[147] Tinplate production embodies higher energy intensity than uncoated steel, with a gross energy requirement of about 49.8 MJ/kg for tinplate compared to 42.9 MJ/kg for tin-free steel, attributable to the smelting, refining, and electrolytic coating stages.^[148] This elevated energy footprint stems from the thermodynamic demands of reducing tin concentrates and applying thin coatings, amplifying the overall resource intensity of tinning relative to base steel fabrication.

Usage Safety and Waste Management

In food contact applications, such as tin-plated steel cans, regulatory limits on tin migration ensure safety, with the Codex Alimentarius recommending a maximum of 250 mg/kg tin in solid foods and the WHO establishing a provisional tolerable weekly intake of 14 mg/kg body weight for inorganic tin.^[149] ^[149] The FDA does not enforce a specific numerical limit but monitors canned foods, where typical tin levels from unlacquered cans remain below 250 ppm under normal storage and consumption conditions, primarily due to protective lacquering that minimizes dissolution.^[150] ^[151] Inorganic tin exhibits low oral toxicity and does not bioaccumulate in humans, unlike mercury or lead; gastrointestinal absorption is typically under 5%, with unabsorbed tin excreted via feces and absorbed portions rapidly eliminated through urine, resulting in no significant tissue retention at dietary exposures.^[152] ^[146] Acute effects require ingestion of grams per kilogram body weight, far exceeding migration levels from tinning, and chronic low-dose exposure shows no carcinogenic or reproductive risks in epidemiological data.^[153] In electronics, tin coatings risk whisker formation leading to electrical shorts during operational use, with rare documented fires in confined high-reliability systems like satellites, but such failures cease upon device decommissioning.^[91] ^[154] For waste management, e-waste containing tin-plated components poses minimal leaching hazards in landfills, as metallic tin and its oxides demonstrate high stability and low solubility under neutral pH conditions prevalent in mature leachates, with empirical tests showing negligible release compared to more mobile metals like copper or lead.^[155]

Recycling and Sustainability Efforts

Detinning of tin-plated steel scrap, a primary source of secondary tin, typically employs electrolytic processes in alkaline caustic solutions such as sodium hydroxide, where tin is selectively dissolved and recovered as metal or stannate compounds. This method achieves tin removal to levels below 0.028% on the steel substrate, enabling high-purity steel recycling while yielding tin recovery efficiencies of up to 96% in optimized operations.^[156]^[157] In European Union scrap processing, tin recovery from collected tinplate packaging reaches 70-80% efficiency at specialized facilities, bolstering circular material flows for food and beverage sectors where tinplate constitutes a significant waste stream. Globally, however, end-of-life recycling input rates for tin average 33.4% as of 2023, reflecting persistent challenges like low collection yields from mixed municipal waste and contamination that diminish overall recovery below 50%.^[158]^[159] Tin's inherent properties allow infinite recyclability without quality loss, theoretically enabling closed-loop systems that minimize primary mining demands in a mature circular economy. The International Tin Association advocates standardized metrics like the Recycling Input Rate to track and enhance secondary supply contributions, which have stabilized at 30-35% over the past decade despite price fluctuations. Pilot initiatives in the 2020s, including bioleaching explorations for e-waste containing tin alloys, seek to lower chemical intensities in recovery compared to traditional hydrometallurgical routes, though scalability remains limited.^[160]^[159]

Modern Developments

Technological Improvements Since 2000

In electronic applications, alloying tin coatings with bismuth (Sn-Bi) emerged as a key advancement post-2000 to mitigate tin whisker growth, a reliability issue exacerbated by the shift to lead-free processes under RoHS directives effective 2006. Additions of 2-4% bismuth alter the deposit's microstructure and promote stress relaxation, suppressing whisker formation comparably to legacy Sn-Pb alloys without introducing lead.^[161]^[162] Sn-Ag alloys have similarly demonstrated effective whisker suppression in pure tin alternatives, with studies showing reduced growth propensity under thermal and mechanical stress.^[163] These alloys maintain solderability while addressing compressive stresses from copper diffusion in plated finishes.^[164] For printed circuit boards (PCBs), immersion tin processes were refined to support fine-pitch lead-free assembly, yielding uniform coatings of 0.8-1.2 micrometers (approximately 0.6-0.9 g/m²) that enhance copper protection and solder wetting without excessive thickness.^[165] Organic metal catalysts introduced in immersion baths enable thinner deposits—down to sub-micrometer levels—while preserving corrosion resistance and minimizing tin consumption, addressing material efficiency in high-volume production.^[166] These refinements correlate with improved yield rates exceeding 95% in qualified processes, per industry benchmarks for defect-free boards.^[64] Electrolytic tinning advanced through pulse plating techniques, which apply regulated on-off electrical cycles to achieve finer grain structures, better uniformity, and reduced hydrogen embrittlement compared to direct current methods.^[103] In tinplate and wire production, sulfate-based electrolytes deployed since 2004 yield brighter, more adherent deposits with enhanced brightness and operational stability over traditional stannate baths.^[167] Such process tweaks have lowered defect densities and material waste, supporting thinner viable coatings around 0.2 g/m² for specific applications without compromising barrier properties.^[168]

Market Trends and Future Prospects

The global tin market, valued at approximately USD 6.46 billion in 2024, is projected to reach USD 9.48 billion by 2033, reflecting a compound annual growth rate (CAGR) of about 4.3%, driven primarily by demand in electronics soldering and chemicals, with emerging contributions from renewable energy applications.^[142] Tin consumption in solar photovoltaic modules, used for soldering interconnections, accounted for around 7,500 tons in 2016 and is expected to double by 2030 amid global solar capacity expansions exceeding 1 TW annually.^[169] Overall demand is forecasted to grow at 2-3% per year through 2030, supported by electronics sector expansion tied to electrification trends, though tin's share in batteries remains nascent at under 1% of total use.^[170] Supply constraints pose risks to market stability, with production concentrated in Indonesia (about 30% of global output) and Myanmar facing export disruptions and geopolitical instability, leading to projected deficits widening after 2027 as mine developments lag.^[171]^[172] Recycling currently supplies around 25% of tin needs, up from prior years, but inefficiencies in recovering tin from complex alloys limit scalability without technological advances in separation processes.^[173] Future prospects hinge on tin's enduring niche in high-reliability applications like solder alloys, where alternatives such as lead-free bismuth substitutes have not displaced it due to performance trade-offs in thermal and mechanical properties. Potential growth in sodium-ion batteries, where tin anodes demonstrate 90% capacity retention after 100 cycles, could add incremental demand if commercialization accelerates beyond pilot stages by 2030, though lithium-ion dominance and graphite anode prevalence temper expectations for a major shift.^[174]^[175] No evidence suggests a paradigm disruption, as tin's market resilience stems from its irreplaceable electrochemical and corrosion-resistant traits in select uses rather than broad substitution feasibility.^[176]

References

[1]
Tinning: Steel Surface Coating for Corrosion Resistance & Aesthetic Fi
May 22, 2025 · Tinning is a process of coating steel with a thin layer of tin to enhance corrosion resistance, improve appearance, and extend the lifespan ...
[2]
How Is Tin Plating Used And What Are The Benefits? - Dorsetware
Feb 1, 2022 · Tin plating, also known as tinning, is an industrial process of metal plating during which the surface of metal objects is coated with a thin layer of tin.
[3]
Historical Development of Tinplate - - World of Steel
The origins of tinplate can be traced to the tinning of hammered iron sheet, carried out in Bavaria in the fourteenth century.
[4]
Tinning - an overview | ScienceDirect Topics
The biggest application is food processing equipment and containers; the second largest use is soldering applications; and the third largest is use as an ...
[5]
Industrial Uses of Tin Plating - Sharretts Plating Company
The leading users of tin plating are divided between electronics, mechatronics, hardware, fasteners, food equipment and, most recently, solar.
[6]
The Tin Plating Process: A Step-By-Step Guide
There are three basic types of tin plating, each of which relies on the deposition of an electrolytic tin solution onto the surface of a metal object.
[7]
[PDF] Tin Plating
Post-plating. The major uses for tin plating are (1) corrosion protection and. (2) the preservation of base metal solderability. When the latter is the prime ...Missing: definition | Show results with:definition
[8]
Corrosion Protection: Sacrificial vs Barrier Coatings - DECC
Aug 1, 2017 · In terms of functional coatings that offer corrosion protection, there are essentially two categories: sacrificial coatings and barrier coatings.
[9]
Industrial: Design Guide - Tin Coatings
Tin offers corrosion protection, preserves solderability, and provides a better contact surface than bare copper metals.
[10]
[PDF] ATSDR Tin Tox Profile
It explains a substance's relevant toxicologic properties in a nontechnical, question-and-answer format, and it includes a review of the general health effects ...
[11]
https://us.misumi-ec.com/blog/what-is-tin-metal/
[12]
[PDF] Growth Kinetics of Intermetallic Compounds between Sn and Fe ...
The aim of this work is to explore the growth behavior of intermetallic compound between electroplated tin (Sn) and iron (Fe) at the temperatures above the ...
[13]
(PDF) Formation of an Fe-Sn Intermetallic Layer During the Reflow ...
Aug 10, 2025 · The kinetics of the formation of the iron-tin alloy FeSn2 have been studied at temperatures below and above the melting point of tin (232°C).
[14]
Tin (Sn) - Properties, Applications - AZoM
Aug 13, 2013 · Tin is a silvery, soft and pliable metal which resists corrosion. The atomic number of tin is 50 and it is a period 4, group 4 element in the periodic table.
[15]
[PDF] Tin whiskers: a case study
There is disagreement as to whether bright tin finishes are more or less likely to produce whisker growth than matte finishes. Some studies indict ...
[16]
[PDF] ABSTRACT Title of dissertation: FUNDAMENTAL STUDIES OF TIN ...
Contrary to prior belief, both bright and matte tin finishes can whisker. SAC305 solder can whisker. CTE mismatch, 'irregular' growth of IMCs, and oxidation ...
[17]
[PDF] Understanding galvanic corrosion - à www.publications.gc.ca
Tin is more noble than steel, so the underlying steel will undergo galvanic corrosion if the tin is damaged. There are cases where plating occurs ...
[18]
Corrosion Mechanism Differences of Tinplate in Aerated and ...
Aug 7, 2025 · Under deaerated conditions, the corrosion process of tinplate was dominated by the anodic dissolution of the tin coating, and ICP analysis ...
[19]
Corrosion - galvanic3
Tin-plating is an alternate mode of protecting steel. The diagram shows a scratched section of the tin (Sn) steel (Fe) structure. The position of tin and iron ...
[20]
Pewter - an overview | ScienceDirect Topics
Tin has a long, colorful history. The extraction and use of tin began during the Bronze Age around 3000BC when early craftsmen discovered that bronze – a ...Missing: origins | Show results with:origins
[21]
History of Tin Timeline - Makin Metal Powders
Feb 2, 2023 · Tin was first used in 3500 BC in the city of Ur in southern Mesopotamia, now known as Iraq. The natives of Iran made articles from bronze, which is an alloy of ...Missing: tinning | Show results with:tinning
[22]
The metals of antiquity – tin - MINING.COM
Mar 26, 2021 · The earliest tin bronze artefacts, dating to around 3,000 BC, have been found in the Middle East and around the Mediterranean, indicating that ...
[23]
[PDF] growth of the british iron industry. - Census.gov
The art of tinning iron was first practiced in Bohemia, and about 1020 it was introduced into Saxony. These. -countries for a time supplied all Europe with tin ...
[24]
Tinning - chemeurope.com
Tinning is the process of making tinplate, which consists of sheets of iron or steel that have been thinly coated with tin by being dipped in a molten bath ...Missing: cookware | Show results with:cookware
[25]
[PDF] Guide to Tinplate
In. 1720 a tinplate works was set up in South Wales, and this used hot-rolled iron sheets as the basis metal; this innovation, together with improved pickling ...Missing: 19th | Show results with:19th
[26]
Women in the Tinplate Industry - Llanelli Community Heritage
Nov 26, 2024 · The first tinplate works in South Wales were opened in Pontypool in 1720 and in Kidwelly in 1737. In the following century tinplate works ...
[27]
The story of how the tin can nearly wasn't - BBC News
Apr 21, 2013 · Tin cans have, in 200 years, changed the way the world eats. But a Victorian cheap meat scandal nearly destroyed them.
[28]
How Napoleon Influenced The Canned Food Industry - Tasting Table
May 12, 2022 · The French emperor actually had a major impact on the food industry too. If it weren't for him, canned food could've been invented much later in history.
[29]
[PDF] What was the immediate effect of the McKinley Tariff on the South ...
May 31, 2018 · Employment increased 61% from 15,500 in 1880 to 25,000 by 1891 and output rose steadily from 6.3 million boxes in 1880 to 11.7 million by 1889 ( ...
[30]
Dafen Tinplate Works
Nov 3, 2017 · In the nineteenth century this typically varied from 112 to 450 per box, although 112 and 225 were the most common. Output was reckoned in the ...
[31]
Production of Tin Plates and Tin Free Steel - IspatGuru
Oct 4, 2014 · The first electrolytic tinning lines began to operate in Germany in 1934 and on a commercial scale in USA in 1937. Tin shortages during the ...Missing: mechanization | Show results with:mechanization
[32]
Electrolytic Tinning Process - - World of Steel
This flow melting process enhances the corrosion resistance of the product by formation of an inert tin-iron alloy layer. Prior to flow melting the plate may ...
[33]
[PDF] THE ELECTROLYTIC TINNING LINE OF THE EMPRESA ... - UNIDO
The objective of this operation is to make the tin coating bright, for the untreated coating deposited on the strip has a matt, dull appearance. The operation ...Missing: mechanization flow-
[34]
US3428534A - Manufacture of electrolytic tinplate - Google Patents
In the tinning line abovedescribed, a strip speed of 800 feet per minute corresponds to a holding time of about 1.6 seconds, and a strip speed of 300 feet ...
[35]
[PDF] Development of Processing Technology for Flat Sheet Products
In 1959, the first continuous annealing line in Japan was con- structed at Hirohata Works, and this was followed by the construc- tion of many others. However, ...
[36]
J and L Tin Mill
The first tinning lines installed at Aliquippa were lines number one and two installed in 1943 and have since been shut down. Present Tin Mill operations, ...
[37]
Relative value of different weights of tin coating on canned food ...
an average ot three pounds of tin per base box, nevertheless, they were not elimi- nated byany weight of coating, and no clean cut conclusion can be drawn as to.
[38]
Tinplate - IspatGuru
00011. In the original system, 1 lb basis box meant that 1 lb of tin was applied evenly to both sides of the plate, i.e. each side received 0.5 lb (equivalent ...
[39]
The Steel Story - worldsteel.org
And in shipbuilding, steel began to replace wrought iron plates. Cunard's SS Servia was one of the first steel liners – complete with another innovation ...
[40]
Cold Rolling Mills - Ingeteam
Cold rolling is a continuous high speed deformation process, keeping the temperature below the crystallization point.
[41]
Tinplate: Characteristics and Production - CUMIC STEEL LIMITED
There are two methods for producing tin plated steel sheets: hot-dip plating and electroplating. The thickness of the tin-plated layer of the hot-dip method is ...
[42]
[PDF] Steel Pickling: A Profile - US EPA
HCl batch pickling as a metal surface cleaning or etching process for various metal shapes prior to applying surface coatings such as galvanizing. The other ...
[43]
Pickling Explained - Definition, Process & More - Fractory
Sep 28, 2023 · The most common acids used for steel pickling are hydrochloric acid and sulfuric acid. These chemicals also work for a variety of metals other ...
[44]
How is Electrolytic Tinplate Coil Processed?
Apr 3, 2024 · The pre-treatment of tin plating consists of pickling, alkali washing, water washing and brushing. The purpose is to ensure the quality of ...
[45]
Electrolytic Cleaning | Products Finishing
Mar 1, 2013 · There are two general modes of electrolytic cleaning: anodic and cathodic. In both cases a DC current is applied between an insoluble electrode ...
[46]
https://www.tinplatecoil.com/manufacturing.html
[47]
[PDF] Techniques for Measuring the Condition of a Metal Surface
Two methods are widely employed in industry to evaluate wettability and surface energy: the dynes test and contact angle. Dyne testing (ASTM D2578 “Standard ...
[48]
005 Hydrogen Embrittlement - Pickling - Technical Tutorial - MISUMI
Jul 31, 2009 · In these cases where products are processed by cathode electrolysis, hydrogen embrittlement occurs due to electrolysis of water. With anode ...
[49]
What is Hydrogen Embrittlement and How is it Prevented? | APT
Hydrogen embrittlement results from the simultaneous codeposition of the primary metal and hydrogen on the surface of the work piece (cathode).
[50]
Smokeless fluxing agent for hot-tinning, hot-galvanizing, and hot ...
In a preferred embodiment of the smokeless fluxing agent, use is made of a mixture of 65 to 85% by weight of zinc chloride, 10 to 35% by weight of potassium ...
[51]
Optimal Hot-Dipped Tinning Process Routine for the Fabrication of ...
Mar 6, 2020 · The appropriate dipping temperature range is 260 to 280 °C, which assists to maintain acceptable micro hardness (i.e., maintaining at least 95% ...Missing: early manual palm oil
[52]
[PDF] ANIMAL FATS IN HOT DIP TINNING - Wikimedia Commons
Eight different possible substi^rfces for palm oil, prepared from animal fats such as lard, grease? or tallow were given preliminary.
[53]
Tinplate and Process of Tinning - IspatGuru
Jun 22, 2019 · Hot dip tinning process is the process of immersing the steel black plate into a bath of pure molten tin at a temperature greater than 232 deg ...
[54]
(PDF) Optimal Hot-Dipped Tinning Process Routine for the ...
Oct 16, 2025 · The appropriate dipping temperature range is 260 to 280 °C, which assists to maintain acceptable micro hardness (i.e., maintaining at least 95% ...Missing: manual palm
[55]
Review on metal packaging: materials, forms, food applications ...
Historically, dipping was used for coating and it was known as hot-dipped tin plate, but now electroplating is most commonly used (known as electrolytic tin ...<|separator|>
[56]
Electrolyte Types - - World of Steel
Concentrations of stannous tin below the recommended range of 25 - 35 g/l may result in high current density defects such as dark deposits on unflowmelted plate ...
[57]
US4181580A - Process for electro-tin plating - Google Patents
The operation was carried out using insoluble platinized titanium anodes with a plating current density of from 20 to 40 A/dm 2 and at 40° C., so as to ...
[58]
Faraday's Law of Electrolysis, and Electroplating - Finishing.com
Faraday's Law of Electrolysis explains how plating/anodizing thickness is related to current (amperage) and plating time.Missing: uniform tinning
[59]
Difference between Pure Tin, Bright Tin, and Matte Tin
Apr 20, 2025 · Matte tin coatings are made in electrolytes without the addition of brighteners. Matte tin has a dull appearance, but the level of internal stresses in matte ...
[60]
Tin Plating Services Company | MIL-T-10727, ASTM B545, AMS 2408
Tin plating can be broken up into two primary categories: Bright tin and matte (solderable) tin. Both deposits are electrolytically applied. Bright tin plating ...
[61]
Tin Reflow Plating - Precision Plating Company
Reflow plating the pure tin deposit significantly reduces the whisker formation while converting the matte tin finish to a smooth bright finish.
[62]
Industrial Tin Reflow Plating | Applications Review Article | Summit
Jun 10, 2025 · Tin reflow achieves performance-enhancing finishes by combining an electroplated tin layer with a controlled heat “reflow.”
[63]
Product Information - Titan Steel
Rough estimates have placed global production at between 14 million tons and 18 million tons per year, but due to low rates of utilization, it is difficult ...
[64]
Immersion Tin Surface Finish | Sierra Circuits
As per IPC-4554 standard, the typical value of immersion tin thickness ranges from 1.15 µm (46 µin) to 1.3 µm (52 µin). IPC Class 3 Design Guide - Cover Image ...
[65]
Surface finishes of printed circuit boards - complete guide | Gatema
Aug 26, 2024 · Immersion tin (ImSn) This is a method of immersion plating copper with tin. This means that copper atoms are replaced by tin atoms. The process ...
[66]
The Ultimate Guide to Immersion Tin PCB Finish - ALLPCB
Jun 11, 2025 · Disadvantages of Immersion Tin PCB Finish · 1. Limited Shelf Life · 2. Sensitivity to Handling · 3. Not Ideal for Multiple Reflows · 4. Risk of Tin ...
[67]
Printed Circuit Board Surface Finishes - Advantages and ...
Advantages: Flat Surface; No Pb; Simple Process; Re-workable; Cost Effective. Disadvantages: No Way to Measure Thickness ...
[68]
Immersion Tin (ImSn) PCB Surface Finish - JHYPCB
The immersion time and temperature are controlled to achieve the desired coating thickness. After immersion, the PCBs are rinsed thoroughly in deionized water ...
[69]
An investigation of the recommended immersion tin thickness for ...
Aug 5, 2025 · With the current immersion tin thickness recommendation of 1 μm, based on the needs of lead containing solder pastes, a residual pure tin layer ...
[70]
What is Brush Plating? - SIFCO Applied Surface Concepts
Brush plating, also known as selective plating, is a portable electroplating method used to apply coatings in localized areas without an immersion tank.Missing: specialized tinning vapor electronics
[71]
tin plating - FJY Brush Plating
Brush tinning is a highly efficient, fast, low-cost, easy-to-use method for local tin plating. More and more electric power, electrical appliances, and ...<|separator|>
[72]
Guide to Selective and Brush Electroplating | Sharretts Plating
Learn more about selective and brush electroplating from what the advantages are to the most common metal alloys that are used.Missing: tinning | Show results with:tinning
[73]
Critical Considerations for Tin Whisker Mitigation
Mitigation includes conformal coatings, mechanical reinforcement, alloying, robotic hot solder dip, and specific board finishes like nickel palladium gold.
[74]
Minimizing Tin Whiskers - I-Connect007
Annealing/heat treating - Heat treating at 150°C for one hour has shown promise as a tin whisker mitigation technique when used on matte tin-plated copper alloy ...Missing: tinning | Show results with:tinning<|control11|><|separator|>
[75]
Tin Whiskers' Behavior under Stress Load and the Mitigation Method ...
Nov 11, 2021 · This research aims to investigate the effects of stress on tin whiskers' formation and growth and the mitigation method for the immersion of the ...Missing: tinning | Show results with:tinning
[76]
Tinplate Market Size, Share, Growth | Global Report [2032]
The global tinplate market size was valued at $30.07 billion in 2023 & is expected to grow from $31.0 billion in 2024 to $40.25 billion by 2032.
[77]
Tinplate Packaging Market | Global Market Analysis Report - 2035
The cans segment leads the product type category with approximately 39.50% share, attributed to its widespread use in food and beverage packaging. Cans ...Missing: percentage | Show results with:percentage
[78]
Why are tin cans used for food? - Qiming Packaging
Feb 13, 2025 · Tin cans are used for food because they provide an airtight seal, protect from contaminants, extend shelf life, and are convenient and portable.Missing: extension | Show results with:extension
[79]
The Tinplate Industry: In-Depth Analysis of Trends, Applications, and ...
Jan 26, 2025 · In terms of production, the global tinplate production was approximately 30 million tons in 2023. As the world's largest tinplate producer ...
[80]
The History of Tin Cans: From Preservation to Customization - Connie
Sep 26, 2023 · These airtight and durable containers protect food from spoiling, significantly extending its shelf life. During the 19th century, tin cans ...
[81]
[PDF] The History of the Can - Can Manufacturers Institute
Another concern for the new beverage can was its shelf life. Even small amounts of dissolved tin or iron from the can could impair the drinking quality of both ...Missing: extension | Show results with:extension
[82]
Sulphide Staining inside Tinplate Cans and its Prevention
Formation of tm sulphide may be prevented by screening the tin from the corrosive agent with lacquers or with the better passivation films formed by cathodic ...
[83]
Tinplate Lacquering and decorating - - World of Steel
They are not very effective against sulphide staining unless pigmented with zinc oxide. ... They cure at 170 – 175°C , to avoid thermal degradation in contact ...
[84]
Tin in canned food: a review and understanding of occurrence and ...
A food survey suggested that the contents of almost 4% of plain internal tinplate food cans contain over 150 mg/kg of tin and over 2.5 million such cans are ...
[85]
Do tinplate cans for food packaging meet food safety standards?
Nov 27, 2024 · According to the test results, if the migration amount is within the prescribed safety limit, the tinplate can is considered to meet the food ...
[86]
Options for Tinning Wire | 2020-04-10 - Assembly Magazine
Apr 10, 2020 · Tinning wire is an essential part of soldering preparation. When done properly, it improves the operating temperature range, water resistance and mechanical ...
[87]
Soldering of wires and cables - Super Engineer
Sep 24, 2024 · The tinning process involves dipping the exposed copper conductor into a flux and then into a solder pot. After the tinning, check the following ...
[88]
An Overview of HASL, ENIG, OSP, Immersion Tin and ... - JLCPCB
Comparison of PCB Surface Finishes ... HASL is a cost-effective option that is good for through-hole components, but not for fine-pitch components. ENIG offers ...
[89]
5 Types of PCB Surface Finishes: Is One of Them Right For Your ...
... immersion silver. Surface Finish Closeup: Immersion Tin. Advantages: Immersion finish = excellent flatness; Good for fine pitch / BGA / smaller components; Mid ...
[90]
RoHS Compliance for Circuit Board Manufacturing - ELEPCB
May 27, 2024 · RoHS 2/3 also applies to the metal sector, specifically metal plating and other coatings on EEE electronics. These processes are often part ...
[91]
Basic Info on Tin Whiskers - NASA NEPP
Jan 17, 2019 · Electroplated finishes (especially "bright" finishes) ... alloyed with tin imparts whisker-inhibiting attributes to the final finish.
[92]
Whisker Failures - NASA NEPP
Satellite Name, Launch Date, First Satellite Control Processor Failure ; Complete Losses -- Both Primary and Redundant SCPs failed ; GALAXY VII [PanAmSat], 27 ...Commercial Satellite Failures · Military Failures
[93]
Solving the Problem of Tin Whiskers - Assembly Magazine
Dec 1, 2006 · Since 1992, tin whiskers have been blamed for the complete failure of three commercial satellites and the partial disabling of four others.
[94]
Tin Plating | US-Based Metal Finishing Company Since 1950
Tin plating provides a smooth, corrosion-resistant finish that enhances conductivity, solderability, and durability for various industrial applications.
[95]
Tin Roofs - Historic Buildings
It was one of the most common metal roofing materials used throughout the 19th century. Terne, an alloy of lead and tin, was also used as a plating material.
[96]
Tin: Characteristics, Uses And Problems - GSA
Jul 16, 2016 · Roofing material: Sheets of terne- and tinplate were soldered and/or mechanically fastened together to form a continuous waterproof covering.Missing: tinning | Show results with:tinning<|separator|>
[97]
Terne Metal Roofs | Fixing Our Historic House
Tinplate iron, commonly called "tin roofing," was used extensively in Canada in the 18th century, but it was not as common in the United States until later.
[98]
Uses for Tin: Solder, Batteries and More - Investing News Network
Aug 1, 2022 · Tin a good candidate for use in solders, as well as tinplate, chemicals, brass and bronze and other niche applications.
[99]
How many years is the service life of tinplate sheet? - Chumboon
Sep 3, 2024 · Tinplate sheet service life varies: 2-5 years for food/beverage, 5-10 for chemical, 10-20 for construction, and 5-15 for electronics.Missing: data | Show results with:data
[100]
The Advantages of Tin Electroplating in Industrial Applications
May 14, 2024 · The Advantages of Tin Electroplating in Industrial Applications · 1. Corrosion Resistance · 2. Solderability · 3. Wear Resistance · 4. Aesthetic ...
[101]
Corrosion and Passivation Behaviors of Tin in Aqueous Solutions of ...
Tin acts as Sn(II) via the active zone, so it corrodes with evolving H2 gas in an acidic medium. In passive areas, Sn(IV) is oxidized to produce an inclusive ...
[102]
[PDF] The Salt Spray Test - GalvInfo
Dec 2, 2017 · Number of hours until rusting of the steel is first evident. • Number of hours until 5% of the surface area is rusted. • Number of hours until ...
[103]
The Ultimate Guide To Tin Plating: Processes, Benefits, And ...
Hot-dip tin plating is a well-known process that comprises dipping cleaned metallic substrates in molten tin baths. These baths are kept above 232°C, the ...
[104]
Solderability - an overview | ScienceDirect Topics
However, in general, a wetting angle between 20 and 45° is considered ideal for most soldering applications. It is an important parameter because it indicates ...<|separator|>
[105]
Tinplate Metal Packaging Benefits - Reynolds Services, Inc. (RSI)
Jun 12, 2024 · ... resistance to corrosion ... This resilience leads to prolonged lifecycle and fewer replacements, culminating in undeniable cost savings.
[106]
Why Have Tin Prices Struggled in 2022? - International Banker
Dec 6, 2022 · The bull run culminated in an unprecedented peak of $51,000/tonne in March 2022, at a time when the tin market experienced a significant ...Missing: data per
[107]
“The economic impact of tin mining in Indonesia during an era of ...
After China, Indonesia is the world's second-largest producer of tin accounting for 26% of global production in 2019 (USGS, 2021). Resource governance and ...Missing: percentage | Show results with:percentage
[108]
Tin Mineral Due Diligence - Responsible Minerals Initiative
Tin Working Group Indonesia's Bangka-Belitung region supplies approximately 30 percent of the global tin market and 90 percent of the country's exported tin.Missing: vulnerabilities | Show results with:vulnerabilities
[109]
Tin breaks higher as Indonesia cracks down on illegal miners
Oct 5, 2025 · London Metal Exchange (LME) three-month tin has jumped to over $37,500 per metric ton, the highest level since April when the supply threat was ...Missing: vulnerabilities percentage
[110]
Tin Mill (Facility): Essential Steel Coating for Corrosion Resistance
May 22, 2025 · Electrolytic tin plating consumes electrical energy primarily supplied by ... energy consumption around 2–4 kWh per ton of coated steel. Heating ...Missing: tinning | Show results with:tinning
[111]
Tin in canned food: A review and understanding of occurrence and ...
Aug 7, 2025 · This review considers the factors affecting the dissolution of tin, the reported measurements/surveys of actual levels of tin in canned foods and the studies ...
[112]
[PDF] Tin Whiskers: A History of Documented Electrical System Failures
Apr 2, 2006 · Tin Whiskers. Hybrid Package Lid. 1986 Heart Pacemakers. Medical (RECALL). Tin Whiskers. Crystal Can. 1986 Phoenix Missile. Military. Tin ...
[113]
[PDF] Relay Failure Caused by Tin Whiskers | NASA NEPP
Spectacular damage of several relays from high current flowing to the metal case was very likely caused in each instance by a tin whisker growing from the ...
[114]
[PDF] Long Term Investigation of Urethane Conformal Coating Against Tin ...
Dec 7, 2010 · As a response to the Galaxy IV failure, NASA initiated a study to assess the effectiveness of a urethane conformal coating as a whisker ...
[115]
[PDF] Conformal Coatings for Tin Whisker Risk Management - Circuit Insight
Preliminary testing indicated that conformal coatings of 25 microns (approximately 1.0mil) or less with a modulus of 100MPa or less are at risk of tin whisker ...Missing: percentage | Show results with:percentage
[116]
What Is Tin Pest? - ThoughtCo
Feb 6, 2020 · Tin pest occurs when the element tin changes allotropes from its silvery metallic β form to the brittle gray α form. Tin pest is also known as tin disease, tin ...
[117]
Tin Pest: A Forgotten Issue in Pb-Free Assembly?
Jul 6, 2009 · Upon cooling below about 13.2°C, beta tin turns extremely slowly into alpha tin. “Gray” or alpha tin has a cubic structure and a density of only ...<|separator|>
[118]
Canned Food Sealed Icemen's Fate | History Today
Dramatic evidence that lead poisoning was a key element in the failure of Sir John Franklin's 1845 Arctic expedition has come from the result of postmortems.
[119]
It's time to eliminate lead from tin coating and solder on metal food ...
Jan 11, 2021 · FDA first approved the use in 1939. The agency banned lead in can solder in 1995 after companies reported ending domestic use of the material ...
[120]
Types of steel - ArcelorMittal Packaging
Originally called TFS (Tin Free Steel), it is now known by the acronym, ECCS (Electrolytic Chromium Coated Steel). With regard to its properties and use, ECCS ...
[121]
Tinplate Vs Electrolytic Tin-Free Steel (TFS) - Huaxiao Metal
Aug 5, 2025 · Tin-Free Steel, also known as TFS or ECCS, was developed as a more economical alternative to tinplate. Instead of tin, it features a very thin, ...
[122]
Understanding Tin Free Steel (TFS): Properties and Applications
Tin Free Steel, also known as Electrolytic Chromium Coated Steel (ECCS), is a thin steel sheet coated with chromium and chromium oxide. ... compared to tinplate ...
[123]
What is TFS and Its Uses - - World of Steel
The adhesion of lacquer to TFS-CCO is very good compared to tin-plate steel. It is said to be 10 times better, however, TFS is not compatible with soldering.Missing: lacquering sulfur
[124]
Differences between tinplate and tfs - MUNDOLATAS
May 8, 2023 · Tinplate has excellent corrosion resistance due to the tin coating, while TFS, while also offering corrosion resistance, may be slightly ...
[125]
[PDF] Tin- and Chromium-Coated Steel Sheet from Japan
May 10, 2024 · Some TFS can also be surface coated, lacquered, or laminated. ... Steel cans for food and drinks are constructed from either two or three pieces.
[126]
Why are food cans coated with tin and not with zinc? - Witop Tinplate
May 20, 2024 · While zinc is excellent for corrosion resistance in industrial applications, it does not meet the stringent requirements needed for food safety.
[127]
Why is tin applied to food containers instead of zinc? - Quora
Aug 31, 2020 · Because zinc is above the tin in reactivity series means more reactive than tin and can react with food elements preserved in it.What is added to zinc to make zinc alloy? I'm considering ... - QuoraWhich metal is generally used in the packaging of food materials?More results from www.quora.comMissing: substitutes | Show results with:substitutes
[128]
Epoxy Phenolic Coatings Characteristics Performance and ...
Nov 28, 2023 · Due to its excellent corrosion resistance, epoxy phenolic coatings play a crucial role in three-piece beverage and food cans, as well as in two- ...
[129]
Why is epoxy phenolic gold lacquer an ideal coating for food cans ...
May 14, 2025 · It has excellent adhesion, chemical corrosion resistance and thermal stability, and can effectively resist the erosion of acid, alkali, grease ...
[130]
Epoxy Phenolic Resin - Corrosionpedia
Phenolic resins by themselves produce a high degree of crosslinking through thermosetting, creating high resistive properties to chemicals and water. These ...<|separator|>
[131]
Food and beverage can coatings: A review on chemical analysis ...
Jun 10, 2022 · They play an essential role in the preservation of food maintaining its quality as well as protecting the metal substrate from corrosion (Cooper ...
[132]
Laminated Steel Sheet（Hi-Pet） -Toyo Kohan Co.,Ltd.
Its excellent barrier properties effectively inhibit steel corrosion and protect the contents. ... Polyester film is laminated onto heated TFS or tin plate.
[133]
Laminated Steel for Manufacturing Food Cans and Aerosols
Laminated steel coated with PET or PP offers reduced lacquering, excellent formability, and versatility for food cans, aerosols, and general line component.
[134]
History of the can-timeline - Industrial Physics
1970 – DWI cans take a whole new spin when tinplated two-piece cans are introduced in the UK. 1972 – Multi-packs for beverage cans are introduced (6-packs).<|separator|>
[135]
The Rise of the Beer Can - The Atlantic
May 27, 2016 · When the Hawaii Brewing Company introduced the first all-aluminum beer can in 1958, it made the shift partly for weight savings. The aluminum ...
[136]
Why does aluminum require a lot more energy to produce than steel?
Sep 13, 2023 · The ores of aluminum and iron are both primarily oxides, and obtaining the metal requires reducing the oxides. Aluminum oxide has a greater heat ...
[137]
Energy Cost of Recycling - Why Metal Packaging is better for the ...
Studies have shown that recycling aluminum uses 95% less energy than needed to produce new material and recycling plastic saves 76% of the energy.Missing: consumption steel
[138]
Canned Beverages Market Size, Share & 2030 Trends Report
Sep 22, 2025 · Aluminum cans dominate with 70.34% market share in 2024, while steel/tinplate cans grow at 6.57% CAGR through 2030, reflecting specialized ...
[139]
Replacing Plastics with Alternatives Is Worse for Greenhouse Gas ...
Jan 31, 2024 · In comparison, aluminum cans release twice the emissions of PET bottles, and glass bottles release three times the emissions. PET has the lowest ...
[140]
PET Plastic Bottles Have A Significantly Lower Environmental ...
Mar 6, 2023 · The assessment found that PET plastic bottles, when compared to aluminum cans and glass bottles, are significantly better for the environment.
[141]
The Evolution of Tinplate Food Packaging: Benefits, Applications ...
Sep 2, 2024 · Key Properties of Tinplate. Corrosion Resistance: The most significant benefit of tinplate is it offers a resistance to rust and corrosion.
[142]
Tin Market Size, Share, Trends, Growth and Analysis, 2033
Sep 23, 2025 · According to the U.S. Geological Survey, approximately 300,000 metric tons of tin were mined globally in 2023, with Indonesia, China, and the ...
[143]
Tin mining, palm oil plantations wreaking havoc on small Indonesian ...
Aug 4, 2014 · Belitung Island has lost 10 percent of its remaining forests in 13 years, few protections in place despite biological importance.
[144]
Illegal tin mining leaves trail of ruin in protected Brazilian rainforest
Dec 30, 2019 · Research has linked highly toxic tin ore waste stored in tailings dams to dramatic pollution of soil, vegetation, surface water and groundwater.
[145]
(PDF) Tin: Environmental Pollution and Health Effects - ResearchGate
Jul 2, 2018 · However, divalent tin salts are more toxic than tetravalent ones, causing GI irritation, abdominal pain, and anemia. Tin can be converted by ...
[146]
[PDF] TOXICOLOGICAL PROFILE FOR TIN AND TIN COMPOUNDS
Tin(II) dominates in reduced (oxygen-poor) water, and will readily precipitate as a sulfide (SnS) or as a hydroxide (Sn(OH)2) in alkaline water.Missing: plating | Show results with:plating
[147]
Reducing environmental burden of electroplating wastewater ...
Mar 15, 2025 · The electroplating industry is one of the most highly polluting industries, producing wastewater laden with various toxic metals, including Cr, ...
[148]
Energy and raw materials requirements for tinplate production in the ...
The gross energy requirement for the production of tinplate is shown to be 49.79 MJ/kg and that for tin-free steel is 42.86 MJ/kg.
[149]
Tin in canned food: a review and understanding of occurrence and ...
A food survey suggested that the contents of almost 4% of plain internal tinplate food cans contain over 150 mg/kg of tin and over 2.5 million such cans are ...
[150]
Tin and Compounds | Public Health Statement | ATSDR - CDC
Canned food from lacquered tin-lined cans contains less than 25 ppm of tin since the lacquer prevents the food from reacting with the tin. Food from unlacquered ...Missing: migration | Show results with:migration
[151]
(PDF) Toxic Effects of Tinplate Corrosion and Mitigation Measures in ...
The excess doses of tin can induce serious digestive disturbances, gastrointestinal upsets, cancer in bones and tissues.
[152]
Tin and Compounds | ToxFAQs™ | ATSDR - CDC
Human and animal studies show that ingestion of large amounts of inorganic tin compounds can cause stomachache, anemia, and liver and kidney problems.Missing: bioaccumulation | Show results with:bioaccumulation
[153]
HEALTH EFFECTS - Toxicological Profile for Tin and Tin Compounds
Contact with inorganic tin salts produces mild irritation of the skin and mucous membranes (WHO 1980). However, no specific studies were located regarding ...Missing: bioaccumulation | Show results with:bioaccumulation
[154]
Tin Whiskers Are Real and Complex - Analog Devices
Dec 13, 2011 · Tin whiskers are real. They are microscopic conductive fibers emanating from pure tin surfaces, and they pose a serious problem to electronics of all types.Missing: leaching | Show results with:leaching
[155]
Transport and release of chemicals from plastics to the environment ...
In contrast, a neutral leachate, as found in landfills in the stable methanogenic phase, containing colloidal humic material, facilitates leaching and transport ...
[156]
https://www.okonrecycling.com/industrial-scrap-metal-recycling/steel-and-aluminum/de-tinning-necessary/
[157]
CN102002594B - Method for recovering tin - Google Patents
The recovery rates of copper and tin reach 99.9% and 96% respectively. The method is suitable for tin recovery of tin-plated waste copper materials and tin- ...Missing: caustic | Show results with:caustic
[158]
Tin - | Material Insights
Tin recycling feedstocks. The Recycling Input Rate (RIR) for tin, which measures the proportion of recycled tin in global supply, was 33.4% in 2023.
[159]
[PDF] Tin Flows Historic Recycling Input Rate
The RIR has varied between 30-35% over the last decade, with dips generally corresponding to periods of tin price lows. Page 2. 2. ITA LTD 2021. TIN RECYCLING ...Missing: global | Show results with:global
[160]
Tin Recycling - International Tin Association
For tin products, the average recycled content can be quantified as the 'Recycling Input Rate' (RIR). This measures the percentage contribution of recycled ' ...
[161]
Altering the mechanical properties of Sn films by alloying with Bi
Dec 29, 2007 · This suggests that whiskering can be suppressed by promoting stress relaxation in the Sn layer, as is the case with Sn-Pb alloys. However, the ...Missing: Ag | Show results with:Ag
[162]
[PDF] Tin Whisker Formation Test Report - Mouser Electronics
When added to tin in amounts of 2-4% by weight, bismuth (Bi) may aid in suppressing whisker growth. With lead free solder, SnBi is a viable candidate for ...
[163]
Whisker Growth Behavior of Sn and Sn Alloy Lead-Free Finishes
Aug 5, 2025 · Sn-Ag and Sn-Bi coatings were found to significantly suppress Sn whisker ... Sn whiskers grow spontaneously from an electrodeposited tin coating ...
[164]
TEM analysis of whiskers formation over tin-plated films
Sep 1, 2020 · Since alloying of Pb with Sn can easily suppress the growth of whiskers, the factors controlling whisker growth remain unclear. Unlike the ...
[165]
Immersion Tin PCB Surface Finishes and Top 7 Reasons for Their ...
Jul 26, 2021 · Unlike other surface finishing, this coating produces a denser uniform layer of 0.8 to 1.2 micrometers. This surface finishing possesses a good ...
[166]
[PDF] THIN IMMERSION TIN USING ORGANIC METALS - Circuit Insight
New technology using unique. Organic Metal technology in the immersion tin process allows for thinner tin coatings without sacrificing performance. The catalyst ...Missing: refinements | Show results with:refinements<|separator|>
[167]
[PDF] Technistan TP Process Development Chart - Technic Inc.
20+ wire lines are now running with the tin sulfate process. Oldest installation is from December 2004. • Tin deposit is “brighter” than competitors' baths ...Missing: advancements | Show results with:advancements
[168]
Tin Coating Thickness - Industrial Physics
7-day returnsRange TP: 0.2 to 30gr/m2 (0.02 to 2.5 LB/BB). Range TFS: TFS 5 to 1000 mg/m2 (50 to 10000 mg/ft2). Features & Benefits. The data can be zoomed in or modified ...Missing: reduction savings g/
[169]
Tin Market - Tincorp Metals Inc.
Over 50% of the world's tin is used as an electronic solder for joining circuit boards. The demand for semiconductors is surging and the global semiconductor ...
[170]
Tin Market Faces Supply Challenges Amid Growing Energy ...
Jan 13, 2025 · This structural supply gap is underpinned by robust demand growth forecasts of 2-3% annually through 2030 across tin's end-use markets.
[171]
Global Tin Supply and Demand Forecast: Critical Shortfall Ahead
Jul 8, 2025 · The tin supply and demand forecast shows the gap begins to widen noticeably after 2027, according to ITA forecasts, giving the industry limited ...
[172]
Tin Prices Under Pressure as Myanmar Resumes Exports
Aug 15, 2025 · New tin production faces multiple development constraints that limit near-term supply additions despite elevated price levels. Complex ...
[173]
TIN: THE METAL MOST AFFECTED BY NEW TECHNOLOGIES
Sep 12, 2024 · Tin recycling has improved slightly, but remains a challenge. It is estimated that 25% of tin in use will come from recycling in 2024, up from ...
[174]
Sodium batteries retain 90% capacity after 100 cycles with tin anode
Oct 16, 2025 · Researchers have demonstrated a 99.5 percent tin anode that boosts sodium-ion batteries to new energy and efficiency levels.
[175]
Tin technologies: Discover how tin is making the future
May 1, 2025 · In the energy sector, tin is set to boost battery performance, especially in sodium-ion (SIBs) and lithium-ion (LIBs) variants. Tin-based anode ...
[176]
Global tin demand: upside in energy transition?
In stockGlobal tin demand stands at 400kTpa in 2023 and rises by 2.5x to 1MTpa in 2050 as part of the energy transition. 50% of today's tin market is for solder.