Tin

What it is

Tin (chemical symbol Sn, from the Latin stannum) is a silvery-white metal extracted primarily from the mineral cassiterite (SnO₂). More than 50% of global consumption goes into lead-free solder, the material that bonds components to printed circuit boards and packages semiconductor chips. Tinplate (tin-coated steel for food cans) accounts for roughly a quarter of demand; specialty alloys (bronze, pewter, bearing metals) and industrial chemicals make up the remainder. The London Metal Exchange (LME) sets the global price benchmark via three-month forward contracts. The International Tin Association (ITA), which represents producers covering more than 70% of global refined output, is the principal industry body and statistical authority.

History

Tin has been alloyed with copper to make bronze for at least 5,000 years, giving the Bronze Age its name. Industrial use shifted in the 19th century toward tinplate for food preservation. The decisive modern shift came after 1950, as semiconductor manufacturing turned tin solder into the binding material of the digital economy. The European Union's Restriction of Hazardous Substances (RoHS) directive, adopted in 2003 and widely replicated across Asian and North American markets, banned lead-tin solder and forced electronics manufacturers to reformulate with higher-tin lead-free alloys, permanently tightening per-unit consumption. Tin gained US critical mineral status on the 2025 list, reflecting Washington's concern over supply concentration and a 73% net import reliance.

Current state

Global refined tin production fell 2.7% in 2024 to approximately 371,200 tonnes, according to the ITA. China dominates refining: smelters in Yunnan province, led by Yunnan Tin Group, produced approximately 194,000 tonnes in 2024, roughly 52% of the world total. Yunnan Tin alone produced 85,000 tonnes, the most of any single company globally. Indonesia's national refined production fell 30.7% in 2024 amid a government investigation into alleged historical irregularities at PT Timah, the state-owned producer, generating export delays that persisted into 2025. Myanmar's mining suspension in Wa State cut raw-ore concentrate shipments to Chinese smelters, a disruption that tightened the market through 2025 and into 2026. Peru's Minsur recovered strongly in 2024, up 14.3% to 36,300 tonnes. The global tin market recorded a deficit of approximately 2,200 tonnes in 2024.

On the LME, tin surged to US$53,745 per tonne on May 6, 2026, its highest since the 2022 commodity peak, driven by the concurrent Southeast Asian supply shocks documented in スズがミャンマーとインドネシアの同時供給削減で過去最高近い1トン53,745ドルへ急騰. By late June 2026, the three-month LME price had eased to approximately US$49,681 per tonne, still roughly 55% above year-earlier levels. The United States, responding to its 73% import reliance, directed US$19 million in Defence Production Act Title III funding in 2025 toward construction of a domestic tin-processing facility in Martinsville, Virginia, expected operational by late 2026.

Relationships

The AI-era data-centre build-out has made tin a demand-side story as well as a supply one: every server rack contains thousands of circuit-board solder joints, linking tin demand directly to semiconductor capital expenditure cycles. スズがミャンマーとインドネシアの同時供給削減で過去最高近い1トン53,745ドルへ急騰 captures the most acute recent expression of structural risk: the two largest Southeast Asian mine producers disrupted simultaneously in 2025-2026, removing the redundancy that had historically moderated price spikes. China's refining dominance creates a secondary concentration layer: ore from Myanmar and Indonesia flows overwhelmingly through Chinese smelters before reaching global markets. No substitute for tin in electronics solder has reached commercial scale, and the RoHS-driven removal of lead has eliminated the main historical alternative chemistry.

What to watch

• Man Maw mine (Myanmar, Wa State) restart timeline and which armed group controls the ore-shipment corridor to Chinese smelters
• PT Timah (Indonesia) regulatory outcome and whether Indonesia's national production recovers toward 2023 levels
• LME exchange-registered tin inventories, the leading near-term indicator of physical tightness
• Whether the Martinsville, Virginia processing facility comes online on schedule in late 2026 and dents US import reliance
• Tin's formal inclusion in Western critical-mineral compacts, including the EU Critical Raw Materials Act and allied supply-chain frameworks