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Bonded NdFeB Magnetic Powder (Magnequench-Type, for Small Motors)

Isotropic neodymium-iron-boron (NdFeB) magnetic powder produced by rapid melt-spinning, used as the active material in compression-bonded and injection-molded permanent magnets. Unlike sintered NdFeB magnets, bonded magnets from this powder are near-net-shape, can be formed into complex geometries, and achieve moderate energy product (8-12 MGOe). Primary applications: hard disk drive (HDD) spindle motors (dominant use historically), small DC and stepper motors in automotive (HVAC actuators, window regulators, seat adjusters), inkjet printer carriages, small fans, and power tools. Neo Performance Materials (Magnequench brand) holds a dominant market position in bonded NdFeB powder. The technology was patented by General Motors in 1984.

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Source countries

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Companies

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Goods affected

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Claims on record

Where it comes from

Source countries

Share of global supply, by country.

CountryShare of supply
THThailand40%
CNChina30%
JPJapan18%
USUnited States5%

Who makes it

Supplier companies

4 companies produce bonded ndfeb magnetic powder (magnequench-type, for small motors).

Neo Performance Materials Inc.(NEO.TO)

HQ CA55% share

Rare earth processing and materials company; operates the only commercial rare earth separation facility in Europe — the Sillamäe, Estonia plant. Sillamäe is a former Soviet uranium enrichment and rare earth processing site on the Baltic Sea. Neo's Sillamäe plant separates rare earth feedstock into NdPr oxide and other rare earth products for European magnet manufacturers. Also operates rare earth processing in China (Zibo, Shandong). Neo is the critical link in a non-China NdPr supply chain for European permanent magnet producers. Listed on Toronto Stock Exchange. EU-funded as part of Critical Raw Materials strategy.

Neo Performance Materials

HQ CA25% share

Rare earth processing and magnet powder specialist; operates separation plant in Sillamäe Estonia (only commercial rare earth separation in Europe); NdFeB powder and finished magnet production

Aichi Steel Corporation(5482)

HQ JP18% share

Japanese specialty steel and magnetic materials company; Toyota Group member (Toyota holds ~24% equity). Produces bonded NdFeB magnetic powder (MIRAMAG brand) as a competitor to Neo Performance Materials' Magnequench. ~15-20% estimated global bonded NdFeB powder market share. Also produces specialty steel forgings for automotive transmission components. TSE: 5482.

Yingkou Tianhe Magnetics

HQ CN10% share

Chinese bonded NdFeB magnetic powder producer; competes with Magnequench in the bonded magnet market. ~10% estimated global market share. Produces isotropic NdFeB powder for bonded magnet manufacturers serving automotive and consumer electronics applications.