Critical Minerals Defence Supply Chain: The Gap

The critical minerals defence supply chain is now a primary concern for NATO governments, with Western weapon platforms structurally dependent on minerals dominated by geopolitical rivals. A single guided missile system requires 18 different critical minerals; a combat aircraft needs 15; a naval warship demands 14. China controls the refining of an average of 70% of the world’s top 20 strategic minerals.

Critical Minerals Defence Supply Chain: The Western Gap

The core vulnerability is not mining — it is processing. Even where Western nations extract minerals domestically or from allied jurisdictions, raw material frequently moves to non-allied countries for midstream refining because commercial alternatives do not exist. This processing bottleneck is the central structural weakness in the critical minerals defence supply chain.

China controls approximately 91% of refined rare earth output and 92% of rare earth permanent magnets, according to NATO’s Industrial Advisory Group. These magnets are essential components in radar arrays, sonar systems, laser guidance, and night-vision optics. Gallium — at over 98% Chinese production share — underpins the military-grade semiconductor chips used in electronic warfare and secure communications.

China has demonstrated willingness to weaponise this position. Export controls introduced on gallium and germanium in 2023, and antimony in 2024, directly restricted materials used in military hardware. The China export controls tracker on CMN documents the full sequence of restrictions.

NATO’s 12 Defence-Critical Materials

In December 2024, NATO published a list of 12 materials officially prioritised for defence capability: aluminium, beryllium, cobalt, gallium, germanium, graphite, lithium, manganese, platinum, rare earth elements, titanium, and tungsten. The list was developed by NATO’s Industrial Advisory Group using a defence-capability methodology and underpins the Alliance’s Updated Defence Production Action Plan.

Ten of the 12 are dominated in midstream processing by non-allied nations. The NATO framework is structuring “friend-shoring” pipelines, multinational stockpiling initiatives, and innovation programmes including DIANA to fund material substitutes. The Top 10 technology metals China export control risks analysis covers the highest-exposure materials in this list.

Defence Procurement as a Supply Chain Tool

Western governments are moving beyond reactive market procurement toward direct intervention. The UK’s Critical Minerals Strategy Vision 2035, published in 2026, explicitly commits to “industry-led resilience measures for the UK defence sector” — including stockpiling mandated through procurement mechanisms and requirements that defence equipment source critical minerals from more than one country.

The US approach is further advanced. MP Materials secured a $400m Department of Defense deal to reopen rare earth magnet production in California — the first domestic rare earth magnet supply chain in the US in over a decade. The Pentagon’s critical minerals strategy, covered in the DoD strategy analysis, now treats mineral security as an extension of military readiness.

The Quad critical minerals framework — a $20bn pact between the US, India, Japan, and Australia — coordinates supply chains specifically for defence systems and semiconductors. These plurilateral structures represent the dominant policy architecture emerging from allied governments.

Key Companies in the Defence Critical Minerals Chain

Lynas Rare Earths is the only significant rare earth producer and separator outside China at commercial scale. Its US DoD-funded processing facility in Texas is a direct response to Pentagon supply chain mandates. Lynas supplies neodymium-praseodymium oxide — the feedstock for the permanent magnets used in guided weapons, EV motors, and wind turbines.

MP Materials operates the Mountain Pass mine in California, the only active rare earth mining and processing site in the US. Its DoD partnership covers rare earth magnet manufacturing, targeting the F-35 and other platform supply chains.

On the missile systems side, MBDA has publicly flagged critical minerals supply risk across its guided weapons programmes. MBDA’s assessment identified tungsten, titanium, cobalt, and rare earth elements as the highest-exposure materials — each requiring sourcing from non-allied jurisdictions at current processing capacity. The tungsten price page and cobalt price page cover current market conditions for two of the most exposed materials.

The Antimony and Tungsten Pressure Points

Two materials sit at particular risk in the near term. Antimony — used in ammunition, armour-piercing munitions, and night-vision systems — saw China impose export controls in August 2024. China accounts for approximately 48% of global antimony mine production and a significantly higher share of refined output. The antimony price page tracks spot rates since the controls took effect.

Tungsten is structurally irreplaceable in armour-piercing kinetic ammunition and specialised military tooling. China produces approximately 80% of global tungsten mine output. No Western nation currently has sufficient domestic tungsten processing capacity to substitute Chinese supply at the volumes required by NATO procurement schedules.

The structural reality is that the critical minerals defence supply chain cannot be secured through procurement policy alone. Processing capacity — the midstream gap between mine and military manufacturer — is the problem that allied industrial strategies have only begun to address.

This article is for informational purposes only and does not constitute investment advice.