Tin

What Is Tin

Tin is element 50 — one of the oldest metals in human civilization, known and used for over 5,000 years. Bronze — the alloy of copper and tin that defined an entire age of human history — was the first engineered material humans produced at scale. Tin is soft, silvery-white, and does not corrode. Those properties made it useful in ancient times. They make it indispensable now.

The dominant modern use — approximately 50% of all global tin consumption — is solder (a low-melting-point metal alloy used to permanently join electronic components to circuit boards by melting and re-solidifying around the connection). Every semiconductor chip is attached to its substrate with solder. Every component on every printed circuit board — in every smartphone, laptop, server, car, industrial machine, and medical device on earth — is bonded with tin-based solder. The connection that carries the signal, the current, the data passes through a tin joint. Tin is not in the chip. It holds the chip in place and connects it to everything else.

Beyond solder: tin is used in tinplate (steel coated with a thin layer of tin for corrosion resistance — the material that makes food and beverage cans), specialty chemicals, and as a coating for copper wire. These are real and significant markets. But the semiconductor and electronics solder application is what makes tin strategic in the current decade — because the AI infrastructure buildout, the EV transition, and the solar energy expansion are all simultaneously increasing demand for the same solder that attaches chips to boards.

The quantities are small per unit. A typical smartphone contains roughly 0.5–1 gram of tin solder. A server board contains significantly more. A solar panel uses tin-coated copper ribbons for cell interconnection. An EV battery management system uses tin solder throughout its electronics. At scale — billions of devices, millions of servers, hundreds of gigawatts of solar — the grams add up to a market the International Tin Association projects could grow demand by up to 40% by 2030.

Where It Comes From

China is the world's dominant refined tin producer — accounting for approximately 60–65% of global refined tin output — but China's smelters depend critically on tin ore concentrates imported from two sources that are both currently constrained.

Myanmar is the first. The Wa State autonomous region in northeastern Myanmar hosts the Man Maw mine complex — historically one of the largest tin mining operations in the world and the source of approximately 72% of China's tin ore imports at peak. In August 2023, the Wa State authority shut down Man Maw for a resource audit. The closure was supposed to be temporary. It has not been. Operations have been in controlled, partial restart since early 2024, but output remains well below historical levels — estimates suggest 30–50% of pre-closure production. When Man Maw was running at full capacity, it was quietly filling a structural gap in global tin supply. When it stopped, Chinese smelters found themselves short of concentrates and began running below 70% capacity.

Indonesia is the second. The archipelago nation is the world's largest exporter of refined tin, primarily from the island of Bangka Belitung. Indonesia's tin industry has a long history of regulatory turbulence — export licence renewals regularly disrupt shipment flows, and illegal mining has historically supplemented official production figures. In 2026, Indonesian President Subianto ordered the closure of 1,000 illegal mines in Sumatra and directed enforcement action against unlicensed operations — including the seizure of 500 tonnes of tin from illegal operations. This crackdown tightened the supply outlook from the world's largest exporter at exactly the moment when Myanmar supply was already depressed.

The Democratic Republic of Congo is a growing third source — but subject to the same governance instability and infrastructure constraints that affect every DRC mineral supply chain. Outside these three, meaningful tin production exists in Peru, Bolivia, and Australia — but none at the scale required to offset simultaneous disruptions in Myanmar and Indonesia. Global mine production runs at approximately 290,000–300,000 tonnes per year. The deficit between supply and demand is expected to be the first since 2021.

Why It Matters Right Now

The demand acceleration is coming from three directions simultaneously — and all three are hitting at the same time the supply chain is constrained.

The first is AI infrastructure. Data centers use tin solder extensively — in server boards, networking equipment, storage arrays, and power distribution units. Every GPU cluster being installed for AI training and inference is a circuit board. Every circuit board is soldered with tin. The SHFE (Shanghai Futures Exchange — China's primary commodity futures market for base metals) implemented speculative trading halts on tin futures in April 2026 specifically because traders were positioning on AI data center demand. A futures exchange limiting speculative activity on a metal because of AI infrastructure demand is a signal worth noting.

The second is electric vehicles. EV battery management systems — the electronics that monitor and control individual battery cells, preventing overcharge, over-discharge, and thermal runaway — use tin solder throughout. So do the power electronics (inverters, converters, and motor controllers) that manage energy flow in an EV drivetrain. As EV production scales globally, tin demand from automotive electronics scales with it.

The third is solar energy. Photovoltaic panels use tin-coated copper ribbons — called tabbing wire — to connect individual solar cells within each panel. Each panel contains approximately 10–20 grams of tin. At global installation rates measured in hundreds of gigawatts per year, this represents a significant and growing demand stream that did not exist at scale a decade ago.

All three are growing. The supply chain serving all three is running below capacity because its two largest concentrate sources are both disrupted. The result is the first projected tin market deficit since 2021 — with demand growing approximately 3.5% and supply growing approximately 3%.

The Metal Nobody Put on the List

Here is the contradiction at the center of the tin market: tin is the only metal on ScarceEarth that is simultaneously ancient, cheap per unit, unglamorous — and irreplaceable in the most cutting-edge applications in the digital economy. It does not appear on most government critical minerals lists. It does not receive the supply chain investment attention that neodymium or uranium commands. Policy communities have not declared tin emergencies or funded domestic tin production programs. And yet every GPU, every server board, every EV battery controller, and every solar panel requires it.

The invisibility is structural and permanent. Tin disappears into the solder joint. Once soldered, it is not recoverable or trackable. Unlike battery metals where the material can theoretically be recycled at end of life — cobalt from batteries, neodymium from magnets — solder joints in complex electronics are not economically recoverable at scale. The tin is gone. Each new device, each new server, each new solar installation requires new primary tin. The recycling loop that provides a partial buffer for other critical metals does not exist meaningfully for solder tin.

The supply chain is broken at its foundation. China's smelters — which produce the refined tin that becomes solder — are running below capacity because Myanmar ore has not recovered to historical levels. Indonesia's crackdown on illegal mining removed supply that was never formally counted in official production statistics. The market was in balance partly because informal supply was filling the gap between official production and actual demand. When that informal supply was removed, the structural deficit became visible in LME prices.

The policy gap is the story. Lithium has a congressional hearing. Neodymium has a DFARS deadline. Gallium has a strategic reserve initiative. Tin holds the entire semiconductor supply chain together one solder joint at a time — and it is not on the list.

What the Price Has Done

For most of the period from 2015 to 2020, tin traded in the $15,000–20,000 per tonne range — cheap enough that nobody worried about it, with adequate supply from Indonesia and Myanmar meeting stable electronics demand. The first signal that something had changed came in 2021, when the post-COVID semiconductor surge drove tin above $38,000 per tonne, briefly exposing the market's tightness before the semiconductor demand cycle corrected and prices fell back toward $24,000–28,000 per tonne through 2022 and 2023.

August 2023 was the structural inflection. The Wa State authority shut Man Maw for a resource audit. The market initially treated it as a temporary disruption. Chinese smelters began drawing down concentrates inventories. The restart proved slower than expected, and through 2024 prices ranged $26,500–35,575 per tonne as the supply picture clarified — LME and SHFE inventories fell, and the deficit thesis began to build.

2025 delivered the first sustained breakout: the year averaged approximately $34,140 per tonne, up roughly 44% from the 2024 average, as the controlled Man Maw restart continued well below historical output, Indonesia's regulatory environment tightened, and AI data center demand began adding a new demand layer on top of existing semiconductor consumption.

January 29, 2026 brought the peak at approximately $56,800 per tonne — near multi-year highs — driven by tight supply signals, Indonesia's illegal mining crackdown removing informal production, and speculative positioning on AI infrastructure demand. Late March 2026 produced a sharp pullback to approximately $32,300 per tonne on US tariff concerns and broader commodity demand anxiety. April 2026 reversed the move. By May 23, 2026, LME tin sits at approximately $54,174 per tonne — up approximately 29% year to date and close to the January peak again. The round trip from peak to trough and back in under four months tells you the supply situation is unresolved.