Rare Earth Magnets · Service
Rare Earth Magnets Magnet Pressing and Sintering
Who presses and sinters aligned rare earth magnets in the United States?
What it is
Aligning magnet powder in a strong magnetic field, pressing it and sintering to full density, then heat treating to develop coercivity. Distinct from ordinary press-and-sinter powder metallurgy because of the field alignment: it is what makes the magnet anisotropic, and it sets the direction the finished part must be magnetised in.
Suppliers
Suppliers 4
Companies that perform this process on customer material.
-
Electron Energy Corporation Reported
Manufacture of samarium-cobalt and neodymium-iron-boron magnets and magnet assemblies since 1970, in a 40,000 sq ft plant purpose-built in 1985 for permanent magnet production.
source -
MP Materials Corp. Verified
Permanent magnets are produced at Independence, the company's Fort Worth, Texas facility. NOTE: the company page does not state the process route in detail, so this is recorded from the statement that finished permanent magnets are made there. Reported capacity targets of roughly 1,000 tonnes a year rising toward 10,000 across two plants are FORWARD LOOKING and are not recorded as present output.
source -
Noveon Magnetics Reported
Sintered NdFeB magnet production at San Marcos, Texas by the EcoFlux and Magnet-to-Magnet (M2M) processes, from 100 percent recycled, end-of-life, alternative or virgin feedstock. The recycled route is a compliance route as much as a sustainability one: DFARS 252.225-7052 exempts magnets made from recycled material where the milling and the final sintering both happen in the US.
source -
USA Rare Earth, Inc. Reported
Commercial sintered NdFeB magnet production line (Phase 1a) commissioned March 2026 at Stillwater, Oklahoma, with customer orders being fulfilled from Q2 2026. Ramp targets of 600 tonnes a year by end Q4 2026 and 1,200 tonnes a year in Q1 2027 are TARGETS, not demonstrated output.
source