Tin — The Soldering Metal

Tin in the DRC

Tin, extracted primarily from the mineral cassiterite, is produced in significant quantities in eastern DRC, particularly in North Kivu, South Kivu, and Maniema provinces. Like tantalum and tungsten, DRC tin is designated as a conflict mineral, subject to regulatory due diligence requirements. The Manono deposit also contains substantial tin resources co-deposited with lithium.

Tin's primary application in electronics soldering makes it essential to the global technology supply chain, though the DRC's contribution to global supply is modest compared to major producers Indonesia, China, and Myanmar.

Tin Supply Chain and Electronics Dependency

Approximately 50% of global tin consumption goes to solder — the material that connects electronic components to circuit boards in virtually every electronic device. Every smartphone, laptop, server, electric vehicle control unit, and medical device contains tin solder. This makes tin an essential material for the digital economy, even though it receives far less attention than higher-profile minerals like cobalt or lithium.

Global tin production is approximately 300,000 tonnes per year, with China, Indonesia, Myanmar, and the DRC as major producers. DRC tin production is concentrated in eastern provinces, particularly North Kivu, South Kivu, and Maniema, where artisanal mining dominates. Like tantalum, tin from eastern DRC is subject to conflict mineral regulations and OECD due diligence requirements.

DRC Tin and the Conflict Mineral Legacy

Tin (cassiterite) mining in eastern DRC has been extensively documented as a source of conflict financing. Armed groups have controlled mining sites, taxed transport routes, and used tin revenues to fund military operations. The ITSCI traceability programme, managed by the International Tin Association, provides a tag-and-trace system for DRC tin designed to ensure conflict-free sourcing. However, investigations by Global Witness and others have identified vulnerabilities in the system, including tag fraud and the laundering of conflict-affected tin through compliant supply chains.

The geographical separation between eastern DRC tin mining and the southern Copperbelt corridor means tin is not a primary corridor commodity. However, the conflict mineral regulatory framework established partly in response to tin mining abuses shapes the broader environment for all DRC mineral exports — including copper and cobalt that the corridor does transport.

Manono Connection

The Manono deposit contains significant tin alongside its lithium resource. If Manono is developed, tin by-product production could contribute to corridor freight volumes. The Manono tin would benefit from the deposit's large-scale industrial mining approach, providing traceable, certified-conflict-free tin that commands premium pricing in markets concerned about eastern DRC sourcing risks.

Market Outlook

Tin prices have been volatile, reflecting supply disruptions from Myanmar's mining ban, Indonesian export restrictions, and demand fluctuations from the electronics sector. Long-term demand is supported by electronics growth and emerging applications in lead-free solder formulations and tin-based perovskite solar cells. The energy transition's demand for electronics — from EV control units to smart grid infrastructure — provides structural demand support for tin alongside the traditional electronics cycle.

Tin and Emerging Technologies

Beyond traditional solder applications, tin is finding new roles in emerging technologies that could significantly expand demand. Tin-based perovskite solar cells offer higher efficiency than conventional silicon cells and use tin as a lead-free alternative in their light-absorbing layer. If commercialised at scale, perovskite solar could create substantial new tin demand aligned with the energy transition.

Tin-halide perovskites for LED lighting, tin-based solid-state battery electrolytes, and tin oxide transparent conductors for touchscreens represent additional emerging applications. While none of these has yet reached commercial scale, collectively they suggest a structural expansion of tin demand beyond the traditional electronics cycle.

Tin Supply Risk and Strategic Classification

Tin was added to the US Critical Minerals List in 2022, reflecting growing recognition of supply concentration risk. Indonesia's dominance (approximately 25% of global supply) and periodic export restrictions, Myanmar's political instability and mining disruptions, and DRC conflict dynamics all contribute to supply uncertainty.

The EU's Critical Raw Materials Act includes tin among strategic raw materials requiring supply chain diversification. This classification creates policy incentives for developing traceable, responsible tin supply chains from the DRC and other African sources — incentives that align with the corridor's broader mission of providing verified, transparent mineral export infrastructure.

For investors, tin's classification as critical mineral provides regulatory tailwind for responsible sourcing initiatives. Companies that can demonstrate conflict-free, traceable tin sourcing gain preferential access to European and American markets. The corridor's supply-chain traceability infrastructure positions it to facilitate this market access, creating value for both mining communities and downstream buyers.

Tin and Automotive Electronics

The automotive sector is becoming the fastest-growing consumer of tin through the explosive growth in vehicle electronics. A conventional internal combustion vehicle contains approximately $300 worth of semiconductor chips. An electric vehicle contains $1,000-1,500 worth. An autonomous vehicle may contain $3,000-5,000 worth. Every chip is soldered to circuit boards with tin-based solder. The automotive tin demand trajectory mirrors the broader electrification trend driving corridor mineral demand.

Automotive-grade electronics require the highest reliability solder connections — every joint must function flawlessly for 15-20 years under vibration, temperature cycling, and humidity. This quality requirement favours traceable, certified tin supply chains over informal or conflict-affected sources. The corridor's potential to provide certified-origin tin, verified through our evidence archive, aligns with automotive industry supply chain requirements that are becoming more stringent under the EU CSDDD and similar regulations.

Tin and the Circular Economy

Tin recycling from electronic waste recovers approximately 30% of tin in end-of-life products, though this rate varies significantly by region and product type. The growing volume of electronic waste — over 60 million tonnes globally per year — represents both an environmental challenge and a secondary tin source. European and Japanese recycling rates exceed 50%, while rates in Africa and much of Asia remain below 10%.

Improving e-waste recycling infrastructure in corridor countries could create domestic tin supply while addressing the environmental and health hazards of informal e-waste processing. This circular economy opportunity connects to the corridor's broader development mandate and provides an example of how environmental protection and economic development can be mutually reinforcing.

Tin and Data Centre Demand

The explosive growth of data centres — driven by cloud computing, artificial intelligence, and digital services — represents a significant new tin demand source. Data centres contain massive quantities of server boards, networking equipment, and power distribution systems, all assembled with tin solder. A single hyperscale data centre may contain over 100,000 servers, each with hundreds of soldered connections.

Goldman Sachs projects data centre power consumption will more than double by 2030, implying proportional growth in the electronic hardware (and tin solder) that data centres require. This demand growth compounds the traditional electronics cycle and EV-driven demand, creating a structural growth story for tin that supports mining investment and supply chain development.

For the corridor, tin's data centre connection provides an additional narrative thread linking African mineral supply to global technology infrastructure. Every AI model trained, every cloud service accessed, every streaming video watched depends on servers assembled with tin solder — and the DRC is among the world's most important tin-producing countries. This connectivity between African mining and global digital infrastructure strengthens the case for responsible, well-governed mineral supply chains that our platform monitors and verifies.

Related Pages

Corridor mines: Manono (lithium-tin)

Related minerals: Tantalum · Tungsten · Gold (co-designated 3TG) · Lithium (co-deposited at Manono)

Countries: DR Congo · Zambia · Angola