Magnet Supply Chain

The magnet supply chain refers to the multi-stage industrial pipeline that produces permanent magnets, the small but strategically critical components used in electric vehicle motors, wind turbines, consumer electronics, robotics, and precision-guided munitions. The most powerful commercial magnets are neodymium-iron-boron (NdFeB) and samarium-cobalt (SmCo) magnets, both of which depend on rare earth elements.

The chain typically moves through five stages:

• Mining of rare-earth-bearing ores (notably bastnäsite and monazite).
• Separation and refining into individual rare-earth oxides such as neodymium, praseodymium, dysprosium, and terbium.
• Metal and alloy production, converting oxides into metals and master alloys.
• Magnet manufacturing, including strip casting, milling, pressing, sintering, and machining.
• Downstream integration into motors, generators, and defense systems.

China dominates nearly every stage. According to the International Energy Agency and the US Geological Survey, China accounts for roughly 60% of global rare-earth mining and over 85% of refining and magnet manufacturing capacity. This concentration has made magnets a recurring flashpoint in economic statecraft. In 2010, China restricted rare-earth exports to Japan during the Senkaku/Diaoyu trawler dispute. In April 2025, Beijing imposed export licensing controls on seven heavy rare earths and finished magnets in response to US tariffs, disrupting auto production globally.

Policy responses include the US Inflation Reduction Act (2022) and Defense Production Act Title III awards to firms like MP Materials, the EU Critical Raw Materials Act (2024), and Japan's long-running stockpiling program under JOGMEC. Australia, Vietnam, and Malaysia host emerging separation and magnet projects, while recycling of end-of-life magnets remains a small but growing segment.

For MUN and IR researchers, the magnet supply chain is a key case study in resource interdependence, friend-shoring, and the limits of decoupling in clean-energy transitions.