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    Niron Magnetics’ $150m backing: Iron Nitride plant economics for engineers

    August 7, 2026|

    Reviewed by Joe Ashwell

    Niron Magnetics’ $150m backing: Iron Nitride plant economics for engineers

    First reported on MINING.com

    30 Second Briefing

    Niron Magnetics has secured a conditional $150 million, 20‑year direct loan commitment from the US Department of War’s Office of Strategic Capital to build an advanced Iron Nitride magnet plant in Sartell, Minnesota. The 287,000‑square‑foot facility, due online in 2027, is designed for integrated material‑to‑magnet production of up to 1,500 tonnes per year of rare‑earth‑free permanent magnets, with a follow‑on US plant targeted at 10,000 tonnes annually from 2028. Iron Nitride technology, developed at the University of Minnesota over 13 years, offers a domestic alternative to rare earth magnet supply dominated by Asian producers.

    Technical Brief

    • Loan from the Department of War’s Office of Strategic Capital carries a 20‑year term.
    • Funding covers both construction and specialised equipment procurement for the Sartell advanced manufacturing facility.
    • Iron Nitride magnet technology originated at the University of Minnesota and has undergone 13 years of scaling.
    • Niron’s supply chain design eliminates offshore rare earth separation and any heavy rare earth exposure.
    • Permanent magnet target markets include defence systems, data centres, industrial automation, robotics, aerospace and advanced electric motors.
    • Conditional commitment was publicly announced by President Trump at the American Mining Industry gathering in Washington, D.C.
    • Minneapolis‑based Niron positions the Sartell plant as the first module in a replicable manufacturing platform.

    Our Take

    This Niron Magnetics commitment sits alongside the $725 million Office of Strategic Capital loan to Energy Fuels for rare earth separation, signalling that the US Department of War is building out both upstream (separation) and midstream (magnet manufacturing) capacity in the rare earths and critical minerals chain.

    With more than $10 billion in US federal investments in critical minerals projects already pledged, the conditional support for Niron’s iron-nitride technology suggests policymakers are now targeting technologies that can reduce dependence on Chinese rare earths rather than just backing additional raw material supply.

    The reference to BHP’s Port Hedland iron ore operations in Australia underlines how exposed traditional iron ore supply chains are to a small number of export hubs, whereas Niron’s US-based technology development in Minnesota points to a parallel strategy of onshoring value-added magnet materials rather than competing directly with bulk iron ore exporters.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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