[Proterial Develops High-Performance Neodymium Sintered Magnets Without Heavy Rare Earth] According to the latest news on Proterial's (formerly Hitachi Metals) official website, the company has recently made significant breakthroughs in the field of magnetic materials, successfully developing high-performance neodymium sintered magnets without heavy rare earth — NMX™-F1SH-HF and NMX-G1NH-HF. These two new materials have significantly improved residual magnetic flux density (Br) and coercivity (HcJ), making them highly suitable for EV drive motors. Among them, the NMX-F1SH-HF material, in addition to being applicable for electric power steering and compressors, has a Br of 1.4T and an HcJ no less than 1,671 kA/m, making it very suitable for use in drive motors. Currently, the company has started providing trial samples of this material at its mass production plant. On the other hand, the NMX-G1NH-HF material is designed as a heavy-rare-earth-free option for drive motors requiring high torque and high heat resistance. In laboratory tests, this material maintained excellent magnetic properties even at temperatures above 100°C, with a Br of 1.42T and an HcJ no less than 1,830 kA/m. The company plans to further validate its mass producibility and expects to start providing trial samples at the mass production plant in April 2026.
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