Texas Startup Hertha Metals Hits 99.95% Iron Purity for Rare-Earth Magnet Production

By Mrigakshi Dixit · Interesting Engineering · 2026-08-18

According to Interesting Engineering, Texas-based Hertha Metals has successfully produced 3N5 grade high-purity iron using domestic U.S. inputs. This achievement marks the first time an American firm has reached the specific purity levels required by rare-earth magnet manufacture

According to Interesting Engineering, Texas-based Hertha Metals has successfully produced 3N5 grade high-purity iron using domestic U.S. inputs. This achievement marks the first time an American firm has reached the specific purity levels required by rare-earth magnet manufacture