Domestic Tungsten Sourcing: Is Your Supply Chain Compliant?

Domestic tungsten sourcing means the material in your part can be traced, step by step, back to a mine and a melt outside of China, Russia, Iran, and North Korea, with paperwork that proves it. For most buyers that trace does not exist today. Not because anyone cut corners, but because nobody in the chain was ever asked to document it.

That gap is what DFARS 252.225-7052 turns into a compliance problem with a deadline. This piece is not a rerun of that clause. It is the part the clause does not answer: how to actually check where your tungsten sits before an auditor, or a lost contract, checks for you.

How much of the world’s tungsten actually comes from China

China mined 67,000 of the world’s 85,000 metric tons of tungsten in 2025, roughly four out of every five tons produced anywhere on Earth, according to the U.S. Geological Survey’s February 2026 Mineral Commodity Summary. Vietnam, the next-largest producer, mined 3,000 tons. Nobody else broke 2,500.

The United States mined none of it. Zero tungsten has shipped from a U.S. mine every year since 2015. What the country has instead is downstream capability: American plants that convert tungsten concentrate, ammonium paratungstate, oxide, or scrap into metal powder, carbide powder, and finished parts. Tungsten Parts Wyoming runs one of those conversions, powder to finished part, in Laramie.

Net import reliance has stayed above 50% of U.S. consumption every year since at least 2021, and USGS gives no indication that changes soon. Ores, concentrates, and other tungsten forms imported into the U.S. between 2021 and 2024 broke down like this:

That 26% is the direct-import figure. It does not count material that entered a third country, was melted or processed there, and arrived at a U.S. buyer with no obvious China label on it, which is exactly the loophole DFARS 252.225-7052 is written to close.

Why the sourcing question turned urgent in 2025

Two things happened close together. At the end of 2024 the U.S. raised Section 301 tariffs to 50% on several tungsten products from China. In February 2025, China answered with new export controls of its own on selected tungsten items.

Prices moved fast after that. USGS reports Rotterdam concentrate prices went from $266 to $551 per metric ton unit for 65% concentrate over the course of 2025, and ammonium paratungstate ran from $331 to $675 per metric ton unit on the same track. Both more than doubled in a single year.

The federal government has been positioning for this longer than one bad year of pricing. The National Defense Stockpile listed potential tungsten acquisitions of 2,041 metric tons for fiscal year 2025 and zero planned disposals, meaning the government is building its own reserve rather than drawing it down. USGS also notes multiple projects in Nevada, New Brunswick, and Yukon received Defense Production Act, Title III awards to develop North American tungsten resources, and in October 2025 a joint venture between Kazakhstan and the United States was announced to develop supply outside China. None of that changes what a buyer needs to do with the material sitting in inventory right now.

What “compliant” actually requires

DFARS 252.225-7052 covers tungsten metal powder and tungsten heavy alloy, including finished or semi-finished parts made from it, sourced from China, Russia, Iran, or North Korea. The delivery restriction itself is direct:

“The Contractor shall not deliver under this contract any covered material melted or produced in any covered country.”

Through the end of 2026, “melted or produced” is the whole test. Starting January 1, 2027, the clause widens to the mine or ore stage, and it names recycled and scrap material explicitly, so material that passed through a recycling stream does not reset its country of origin.

There is one carve-out worth knowing if you buy commercial off-the-shelf hardware rather than custom parts. Through the end of 2026, the clause exempts a “commercially available off-the-shelf item that is 50 percent or more tungsten by weight,” meaning COTS items under that threshold sit outside the restriction entirely. That exemption narrows on January 1, 2027 as well, when it shifts to 50 percent or more covered material by weight rather than tungsten specifically. If your COTS item is close to that line, that date is worth calendaring on its own.

Who this actually reaches

The clause text says “Contractor,” but the obligation does not stop at the company holding the prime contract. It flows to subcontractors supplying covered material into that contract, and it flows to distributors reselling tungsten mill products into a defense program, whether or not they machine anything themselves. A distributor with no melt furnace and no machine shop can still be the point where a compliance failure surfaces, because they are the last hands the material passes through before it hits a program that will get audited.

That is the practical reason to check sourcing before a purchase order gets signed rather than after. The buyer of record answers for the material, not whichever tier of the supply chain actually introduced the risk.

How to check your own supply chain

Verification is a paperwork exercise before it is anything else.

• Get country of melt in writing, on every order. A verbal assurance from a sales contact is not documentation. It needs to be on the certificate of conformance or a comparable record you can produce later, because “our supplier told us” does not hold up in an audit.
• Ask where the ore came from, not just the melt. This is not legally required until 2027, which is exactly why starting now matters. Suppliers who cannot answer are telling you something about how far back their own visibility goes, and that gap does not close itself in the weeks before the deadline.
• Treat recycled and scrap content as a separate question. If any part of your supply includes reclaimed tungsten, ask specifically how its origin is tracked back through the recycling stream. The clause does not give scrap a pass, and a supplier who assumes it does has not read the 2027 language closely.
• Confirm the covered-country list against the clause text itself, not a summary someone forwarded you. Four countries are covered today, China, Russia, Iran, and North Korea, and interpretations of what counts as “melted or produced” have moved faster than most internal compliance checklists have kept up.
• Push the requirement upstream past your direct supplier. A domestic melt fed by imported, undocumented ore satisfies today’s rule and fails January’s. If your supplier cannot say where their own feedstock originated, the paperwork you are collecting only covers half the chain.

None of this is unusual by defense-contracting standards. It is unusual for how rarely it gets asked of tungsten specifically, because until this clause, nobody had to.

Where domestic supply actually holds up

One structural answer to the sourcing problem is keeping tungsten that is already inside the country in circulation, instead of relying on new imports for every order. Our sister brand USA Tungsten runs a supply and recovery program built for bucking bars on exactly that logic: it holds a finished-goods buffer domestically and takes worn bars back, weighs and documents the reclaimed tungsten, and routes it into the U.S. supply chain instead of the scrap stream. It will not answer a 252.225-7052 ore-origin question on its own, but it is a working example of what keeping material onshore looks like in practice, for the product category it covers.

For tungsten heavy alloy and carbide components outside that scope, the same underlying discipline applies: know where the melt happened, ask where the ore came from, and get the answer in writing before January 1, 2027 makes it the only question that matters.

Tungsten Parts Wyoming manufactures tungsten and tungsten heavy alloy components powder to part in Laramie, Wyoming, under AS9100D and ISO 9001. Full compliance and material documentation is available on request through our company page.