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U.S. Defense Industry Dodged a Rare-Earth Shortage After China's Curbs

3 points| rediguanayum | 2 months ago |nytimes.com

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rediguanayum|2 months ago

  * US military depends on samarium instead of neodymium magnets due to it's high heat tolerance.
  * For example samarium rare-earth magnets motors are used to control the fins of Tomahawk cruise missiles.
  * Due to tariff war, China cut off some rare-earth exports including samarium
  * Contractors got creative with sourcing about 100 tons of samarium from France and processing in Europe and United States
  * Future sources of samarium need to be discovered