Key Takeaways
- ◆China produces an estimated 85-94% of the world's sintered NdFeB. U.S. domestic production (MP Materials, Noveon, USA Rare Earth, e-VAC) only began commercial output in 2025-2026 and is ramping from a very low base — it cannot yet cover most commercial demand.
- ◆End-use decides the source. For U.S. defense and aerospace programs, DFARS 252.225-7052 restricts Chinese-origin rare-earth magnets, with a full supply-chain ban scheduled for January 1, 2027 — those programs need domestic or allied-country magnets.
- ◆Most established U.S. magnet houses (Arnold, Electron Energy, Thomas & Skinner, Bunting, Dexter, Integrated Magnetics) are strongest in samarium-cobalt, bonded, alnico, and finished assemblies — and many import sintered NdFeB blocks, then machine, magnetize, and assemble domestically.
- ◆For commercial programs (EV, industrial automation, robotics, appliance) without defense restrictions, international factory-direct supply remains the cost and capacity backbone — vetted on certifications (IATF 16949), grain-boundary-diffusion (GBD) cost reduction, and supply continuity.
- ◆The smart sourcing strategy is usually two-track: a qualified domestic or allied source for restricted end-use, and a qualified factory-direct international source for commercial volume and cost — so no single disruption stops the line.
If you are sourcing neodymium-iron-boron (NdFeB) magnets for a U.S. program, the honest starting point is this: most of the world's sintered NdFeB is still made overseas, domestic capacity is growing but small, and the right supplier depends heavily on your end-use and volume. This guide separates the companies that actually sinter NdFeB on U.S. soil from the established U.S. houses that machine and assemble it, from the international factory-direct suppliers that carry most commercial volume — so a buyer can match the source to the requirement instead of the marketing.
The State of U.S. NdFeB Supply
Domestic sintered-NdFeB production in the United States is real in 2026 but starting from a very low base. A 2022 U.S. Commerce Department review found the country imported roughly 75% of its sintered NdFeB from China, and the IEA put China at about 94% of global rare-earth magnet production in 2024. Against that backdrop, MP Materials is ramping integrated mine-to-magnet capacity in Texas, Noveon Magnetics in Texas is the first and so far only operational U.S. sintered-NdFeB producer (recycling-based feedstock), USA Rare Earth commissioned its first commercial line in Oklahoma in 2026, and Vacuumschmelze's e-VAC plant in South Carolina shipped its first U.S. magnets in late 2025. Together these are a strategic foundation measured in a few thousand tonnes per year — material, but small next to China's hundreds of thousands of tonnes. In parallel, long-established U.S. magnet companies remain essential for samarium-cobalt, bonded and alnico magnets, precision machining, magnetizing, and finished assemblies — frequently importing the raw sintered NdFeB blank and adding the engineering value domestically. The practical consequence for a buyer: for most commercial NdFeB volume you are choosing a supplier, not a country, and the qualification questions below matter more than the flag on the building.
Magnet Manufacturers & Suppliers — U.S. Market
| Company | Location | Type | Best for | Certifications |
|---|---|---|---|---|
| MP MaterialsEst. 2017Integrated mine-to-magnet: rare-earth mining and refining plus sintered NdFeB at its Fort Worth 'Independence' plant (first commercial magnets late 2025, ramping to automotive offtake). | Las Vegas, NV (mine: Mountain Pass, CA; magnets: Fort Worth, TX) | Domestic NdFeB producer | Mine-to-magnet domestic supply chain | — |
| Mainrich InternationalEst. 1994Factory-direct sintered NdFeB grades N30-N58 through the AH high-temperature series, grain-boundary-diffusion (GBD) magnets, and finished, magnetized magnet assemblies built to drawing. | International — serving U.S. buyers (manufacturing partners in China) | International factory-direct | Commercial-volume NdFeB and assemblies, GBD cost reduction, second-source continuity | IATF 16949, in-house export licensing |
| Noveon MagneticsEst. 2014Sintered and bonded NdFeB produced domestically via a recycling-based process; the first and so far only operational U.S. sintered-NdFeB producer. | San Marcos, TX | Domestic NdFeB producer | Domestically-produced sintered NdFeB; recycled feedstock | — |
| USA Rare EarthEst. 2019Sintered NdFeB magnet line in Oklahoma (first commercial production commissioned 2026), paired with a domestic heavy-rare-earth resource. | Stillwater, OK (deposit: Round Top, TX) | Domestic NdFeB producer | Emerging fully-domestic NdFeB supply | — |
| e-VAC Magnetics (Vacuumschmelze)New U.S. sintered-NdFeB plant (first U.S. magnets shipped late 2025); parent VAC is a century-old European rare-earth magnet maker. | Sumter, SC (parent: Hanau, Germany) | Domestic NdFeB producer | Allied-source domestic NdFeB for automotive/defense | — |
| Arnold Magnetic TechnologiesEst. 1895Samarium-cobalt (RECOMA), alnico, bonded and flexible magnets, precision thin metals, and engineered NdFeB assemblies (machined and assembled, not domestically sintered). | Rochester, NY | Domestic magnet manufacturer | High-temp SmCo, aerospace and precision assemblies | ISO 9001, AS9100, IATF 16949 |
| Electron Energy CorporationEst. 1970Vertically integrated samarium-cobalt magnets and assemblies — the only remaining U.S. sintered-SmCo producer; also NdFeB products and assemblies. | Landisville, PA | Domestic magnet manufacturer | Defense and space SmCo, vertically integrated U.S. production | ISO 9001, AS9100 |
| Thomas & SkinnerEst. 1901Cast and sintered alnico magnets, magnetic assemblies, and transformer laminations, manufactured in the U.S. | Indianapolis, IN | Domestic magnet manufacturer | Alnico and U.S.-made magnetic assemblies | — |
| Bunting MagneticsEst. 1959Magnetic separation and metal-detection equipment, custom and bonded magnets, and magnetic assemblies. | Newton, KS | Domestic magnet manufacturer | Bonded magnets, assemblies, material handling | — |
| Dexter Magnetic TechnologiesEst. 1951Engineered magnetic assemblies and circuits — sourcing, machining, magnetizing, and assembly (includes its MCE division for aerospace/defense). | Elk Grove Village, IL | Domestic magnet manufacturer | Medical, aerospace and engineered assemblies | ISO 9001, AS9100, ISO 13485 |
| Integrated MagneticsCustom magnets and magnetic assemblies (Halbach arrays, rotors) across NdFeB, SmCo, alnico, and ferrite. | Culver City, CA | Domestic magnet manufacturer | Custom assemblies and rapid prototyping | ISO 9001, ITAR-registered |
| Stanford MagnetsU.S.-based supplier/distributor of NdFeB, SmCo, alnico and ceramic magnets sourced internationally. | Lake Forest, CA | Distributor / importer | Catalog and small-to-mid volume sourcing | — |
| Adams Magnetic ProductsEst. 1950Custom fabricator and distributor of neodymium, SmCo, alnico, ceramic and flexible magnets and assemblies. | Elmhurst, IL | Distributor / importer | Custom-fabricated and distributed magnets | — |
| Master Magnetics (The Magnet Source)Est. 1976Manufacturer and distributor of commercial, consumer and industrial magnets held in large domestic stock. | Castle Rock, CO | Distributor / importer | Stocked commercial and industrial magnets | — |
| K&J MagneticsEst. 2003Online catalog distributor of stock NdFeB magnets with strong technical data tooling. | Pipersville, PA | Distributor / importer | Stock magnets, prototyping, small quantities | — |
Suppliers are labelled by type in the Type column so buyers can match a source to their end-use. Company facts (location, founding year, certifications) reflect public information and may change — verify current certifications directly with each supplier during qualification.
How to Choose a Magnet Supplier
End-use restrictions (defense/aerospace)
If any part ends up in a U.S. defense system, DFARS 252.225-7052 restricts Chinese-origin rare-earth magnets, with a full supply-chain ban from January 1, 2027. Those programs require a domestic or allied-country source — confirm end-use before you shortlist.
Certifications matched to your industry
IATF 16949 for automotive, AS9100 for aerospace, ISO 13485 for medical, ISO 9001 as a baseline. A supplier without the certification your industry demands cannot be qualified, regardless of price.
Magnet cost and GBD
On high-temperature grades, heavy-rare-earth (dysprosium/terbium) content drives cost. Grain-boundary diffusion (GBD) holds coercivity while cutting Dy/Tb content 30-50%, which is often the single largest lever on landed magnet cost.
Volume, MOQ, and lead time
Domestic producers are ramping and may favor large strategic offtakes; distributors serve small quantities at a premium; factory-direct international suppliers typically carry commercial volume with competitive lead times.
Assembly vs. bare magnets
A supplier that ships a finished, magnetized, balanced assembly to your drawing removes magnet handling, magnetizing, and balancing from your line — often worth more than the per-kilogram price on the magnet alone.
Supply continuity and second-sourcing
Tariffs and export controls move fast. A qualified second source — and a supplier with in-house export licensing — is the difference between a price negotiation and a stopped line.
Where Mainrich Fits
Mainrich International is included here as what it is: an international, factory-direct NdFeB supplier serving U.S. buyers, not a domestic U.S. manufacturer. For U.S. defense and aerospace end-use bound by DFARS, a domestic or allied source above is the correct path. For commercial programs — EV traction, industrial automation, robotics, appliance, and sensor work — Mainrich competes on the things that move a commercial program: the full grade range (N30-N58 through the AH high-temperature series), GBD that cuts dysprosium/terbium cost 30-50% while holding coercivity, finished magnet assemblies built to your drawing rather than loose magnets, IATF 16949 quality, and in-house export licensing so a qualified order keeps shipping through disruption. The honest role we ask for is the qualified commercial source — and, for buyers carrying single-source risk today, the second source that keeps the line moving.
Frequently Asked Questions
Are there neodymium (NdFeB) magnet manufacturers in the USA?
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Yes, but domestic sintered-NdFeB capacity is still ramping in 2026. Noveon Magnetics (Texas) is the first and only operational U.S. sintered-NdFeB producer, while MP Materials (Texas), USA Rare Earth (Oklahoma), and Vacuumschmelze's e-VAC plant (South Carolina) are bringing capacity online. Established U.S. companies such as Arnold, Electron Energy, Thomas & Skinner, Bunting, Dexter, and Integrated Magnetics manufacture magnets and assemblies domestically — often strongest in samarium-cobalt, bonded, and alnico magnets — and many import sintered NdFeB blocks that they machine, magnetize, and assemble in the U.S.
Can U.S. defense programs use Chinese-made neodymium magnets?
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Generally no. DFARS 252.225-7052 restricts samarium-cobalt and NdFeB magnets of Chinese origin in covered U.S. defense items. Through the end of 2026 the restriction reaches magnets melted or produced in China; effective January 1, 2027 a full ban applies across the entire supply chain — mined, refined, separated, melted, or produced. Defense and aerospace programs should plan on a domestic or allied-country magnet source, and confirm a part's end-use early, because it determines which suppliers can even be shortlisted.
Is it cheaper to buy magnets from a U.S. manufacturer or to import them?
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For most commercial NdFeB volume, factory-direct international supply is still the cost backbone, because the large majority of sintered-NdFeB capacity sits overseas. Domestic producers are ramping and often prioritize large strategic offtakes; U.S. distributors serve small quantities at a premium. The largest single cost lever on high-temperature grades is usually not the country of origin but the heavy-rare-earth content — which grain-boundary diffusion (GBD) can cut 30-50% while holding coercivity.
What certifications should a magnet supplier have?
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Match the certification to your industry: IATF 16949 for automotive, AS9100 for aerospace, ISO 13485 for medical devices, and ISO 9001 as a baseline quality system. For defense end-use, ITAR registration and DFARS-compliant sourcing matter. A supplier without the certification your program requires cannot be qualified regardless of price, so screen on this first.
What is GBD and why does it lower magnet cost?
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Grain-boundary diffusion (GBD) diffuses heavy rare earths (dysprosium and terbium) along the grain boundaries of a sintered NdFeB magnet rather than throughout the bulk. This achieves the same high-temperature coercivity using far less Dy/Tb — typically 30-50% less — which directly lowers cost, since dysprosium and terbium are the most expensive and most supply-constrained inputs in a high-temperature magnet.
Should I single-source or second-source my magnet supply?
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For anything but the smallest programs, qualify a second source. Tariffs, export controls, and capacity shifts move quickly, and a single qualified supplier is a single point of failure for your line. A common 2026 strategy is a domestic or allied source for restricted end-use plus a qualified factory-direct international source for commercial volume and cost — with a supplier that holds in-house export licensing so a qualified order keeps shipping through disruption.
Sourcing NdFeB for a U.S. program?
Send a drawing or a target specification. Our engineering team will quote the correct grade or assembly with real design margin, and flag any end-use restrictions up front. Human response within 1 business day; pricing within 2.