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Proterial, Ltd.
Japan
Rare Earth & Magnetic Materials: Neodymium magnets and soft magnetics

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Proterial, Ltd. (formerly Hitachi Metals, Ltd.) is an advanced materials manufacturer headquartered in Tokyo, Japan. Tracing its industrial origins to Tobata Foundry Co. founded in 1910 and established as Hitachi Metals Industries in 1956, the company adopted the name Proterial in 2023 following its separation from Hitachi Group.

The company is globally recognized as a premier developer and producer of permanent magnets and soft magnetic materials. Operating research laboratories and major production facilities across Japan (including Osaka, Shimane, Saitama, and Ibaraki) as well as international operations across the Americas, Europe, and Asia, Proterial holds hundreds of core patents in magnetic alloys, including heavy-rare-earth-free neodymium sintered magnet formulations.

Offer

Proterial supplies advanced hard and soft magnetic materials, components, and specialty metals engineered for high-efficiency electric motors, power electronics, and industrial equipment:

  • NEOMAX® Neodymium Sintered Magnets: High-performance Nd-Fe-B permanent magnets featuring heavy-rare-earth-free (Dy/Tb-free) and heavy-rare-earth-saving grades (such as NMX-F1SH-HF and NMX-G1NH-HF) designed for automotive traction motors, electric power steering (EPS), compressors, and industrial servo motors.
  • FINEMET® Nanocrystalline Soft Magnetic Materials: World-first ribbon-wound nanocrystalline soft magnetic material with approximately 10 nm grain structure (Fe-Cu-Nb-Si-B alloy), supplied as ribbons, toroidal cores, and assembled choke coils delivering high saturation flux density and low core loss for EV noise filters and high-frequency power electronics.
  • Permendur Soft Magnetic Alloys: High saturation magnetic flux density Fe-Co soft magnetic alloys used in motor cores for high torque-density applications, including electric vertical take-off and landing (eVTOL) aircraft and precision actuators.
  • Soft Ferrite Materials & Cores: Mn-Zn and Ni-Zn soft ferrites used in automotive power-drive insulation transformers, inductors, and noise suppression components.
  • Metglas® Amorphous Metals: Amorphous metal ribbons and powder cores (such as HLM50) for reactor and motor stator applications.

Tags

neodymium magnets
ferrite cores
neomax
finemet
soft magnetics
nanocrystalline cores
permendur
Industrial Specializations: Rare Earth & Magnetic Materials: Neodymium magnets and soft magnetics
Headquarter/main address: Toyosu Prime Square, 5-6-36 Toyosu
Tokyo
Tokyo 135-0061
Japan
Get Directions
https://www.proterial.com/e/
Business Type: Manufacturer
Ownership: Private
Turnover: €250M+
Employees: 5,000-19,999
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