The race for air supremacy now hinges on rare earth elements as much as aerodynamics. Sixth-generation fighters, including the U.S. Air Force's Boeing F-47 NGAD, the Navy's F/A-XX, China's J-36 and J-50 prototypes, Russia's PAK DP, and the allied GCAP Tempest, integrate advanced stealth, AI-driven drones, and high-power lasers. Each aircraft demands hundreds of pounds of rare-earth magnets for electric actuators, starter-generators, radar arrays, and weapon systems. Neodymium (Nd) and praseodymium (Pr) provide the magnetic strength for flight controls and pumps, while dysprosium (Dy) and terbium (Tb) ensure heat resistance in engine bays exceeding extreme temperatures. Yttrium enhances avionics lasers and turbine coatings, making these elements indispensable for performance and reliability.
China's dominance-refining 99% of Dy and Tb-creates a chokehold. In April 2025, Beijing imposed strict export licenses on seven rare earths, slashing magnet shipments by 74% and spiking prices. This bottleneck risks delaying U.S. fighter production, with the F-47 alone projected to need tens of tons of Nd/Pr/Dy/Tb for 185 planned airframes plus spares. The F-35 already embeds over 900 pounds of rare earths per jet; the more advanced F-47 will match or exceed that, underscoring supply chain fragility for safety-critical systems like gimbaled sensors and precision guidance.
The U.S. responds aggressively. A $1.4 billion federal push, including $550 million to MP Materials for a 10X magnet expansion to 10,000 tonnes annually by 2028, aims to onshore production. Executive Order 14241 and NDAA amendments prioritize domestic sourcing, with DoD securing stakes in producers like MP and funding ReElement and Vulcan Elements. Yet challenges persist: Lynas' Texas facility stalls amid permitting woes, while China's parallel advances in magnesium-rare earth alloys bolster its aerospace edge with superior lightweight, creep-resistant materials for airframes.
Beyond fighters, rare earths underpin avionics navigation, satellite attitude control, and high-performance alloys in engines. Dysprosium doping maintains magnet integrity under hypersonic stresses, directly impacting mission reliability. As global programs accelerate, securing these elements isn't just industrial-it's a geopolitical imperative for the skies.