Defense Magnets, Tantalum and Tungsten: What the Sourcing Certificate Leaves Out

Defense magnets, tantalum and tungsten sourcing questions turn on the material’s actual origin and the promise attached to the delivery. A certificate about the finished product can leave the source of its materials unanswered. If you work in purchasing, materials or quality and know that a supplier’s origin assurance contradicts its production records, you may see the part of a defense supply origin claim that the government’s contract database cannot show.

What Changes for Materials in 2027?

The May 2024 defense contract clause for magnets, tantalum and tungsten sets different sourcing restrictions through December 31, 2026, and beginning January 1, 2027. It covers samarium-cobalt magnets, neodymium-iron-boron magnets, tantalum metals and alloys, tungsten metal powder, and tungsten heavy alloy or finished or semifinished components containing that alloy. The covered countries are China, Iran, North Korea and Russia.

Through the earlier date, the clause bars delivery of covered material melted or produced in those countries, subject to its exceptions. Beginning on the later date, the restriction also reaches mining, refining and separation. Both versions also bar an end item manufactured in a covered country that contains a covered material. For a purchasing employee, a certificate identifying only the final factory can leave earlier production steps unanswered.

For the magnets, the through-2026 rule reaches melting the metals together to make the magnet alloy and every later production stage, including powder formation, pressing, sintering or bonding, and magnetization. From 2027, the samarium-cobalt restriction reaches back to mining or production of cobalt and samarium ore or feedstock, including recycled material. The neodymium-iron-boron restriction reaches back to mining those constituent materials. Both extend through the finished magnet.

Tantalum has its own production path. Through 2026, the restriction covers reducing or melting any form of tantalum to create tantalum metal, including unwrought metal, powder, mill products and alloys, plus subsequent production stages. From 2027, it reaches back to mining or production of tantalum ore or feedstock, including recycled material, through production of the metals and alloys. That makes the source behind a tantalum processor relevant to the delivery promise.

For tungsten powder and heavy alloy, the through-2026 steps include atomization, calcination and reduction into powder, final consolidation of powders made without melting, and subsequent production of the powder, alloy or components containing the alloy. From 2027, the chain begins with mining or production of tungsten ore or feedstock, including recycled material. We compare the supplier’s assurance with the production step and delivery date it actually covers.

Which Exceptions and Subcontract Terms Matter?

The defense acquisition policy excludes acquisitions at or below the simplified acquisition threshold and purchases outside the United States for use outside the United States. For a covered contract, the material clause’s exceptions then matter to what the contractor may deliver. We read the version incorporated in the actual contract alongside the supplier’s certificate.

An off-the-shelf end item can qualify for an exception, but commercial status alone does not settle it. The clause defines such an item as a commercial product sold in substantial quantities and offered without modification in its commercial form. Through 2026, the off-the-shelf exception excludes items that are 50 percent or more tungsten by weight; from 2027, that weight test covers all covered material. Through 2026, it also excludes unincorporated tantalum metal, tantalum alloy and tungsten heavy alloy forms such as bars, plates and sheets.

The clause also provides an exception for an electronic device unless the contract specifies otherwise. Its recycled-magnet exception concerns neodymium-iron-boron magnets whose recycled material is milled, and whose final magnet is sintered, in the United States. A separate exception requires an authorized agency official’s determination that compliant material of satisfactory quality and quantity, in the required form, cannot be obtained when needed at a reasonable price. A supplier’s claim that sourcing was difficult needs to be read against that government decision.

The contractor must pass the substance of the material clause, including its subcontract requirement, into subcontracts and other agreements for items containing a covered material unless a clause exception applies. That includes commercial products, and the contractor may alter the clause only to identify the appropriate parties. The purchase order can therefore show both the restriction passed to a supplier and the material assurance returned.

Buy American requirements for ordinary manufactured end products address manufacture and component content. Specialty-metal requirements address melting or production, and the samarium-cobalt restriction applies in addition to applicable specialty-metal terms. The Defense Department’s explanation of the materials rule specifically distinguishes it from specialty-metal treatment of components from qualifying countries. We match each assurance to its own contract requirement rather than treating a certificate under one rule as an answer under another.

Why the Supplier Behind the Supplier Matters

The government’s procurement database can identify a domestic end product while leaving the origins of its components out of view. The Government Accountability Office’s July 2025 report on foreign suppliers shows what that gap meant for the F-35.

The report identified 115 active contracts for the aircraft during fiscal years 2020 through 2024, with the United States listed as the country of origin for 114. The database did not include the subcontracts that the prime contractor, Lockheed Martin, placed for subsystems, components and raw materials. Defense officials learned through the company that some of the aircraft’s magnets originated in China. We see the blind spot: a domestic aircraft on the screen, Chinese magnets inside it.

The database’s Place of Manufacture field describes the end product, not the countries where its components were made. Its Country of Product or Service Origin field also leaves out country information for other suppliers providing materials and components.

A separate supply-chain tool, SCREEn, reached further. As of April 2025, officials said it held country-of-origin information for first- and second-tier suppliers for 30,000 of approximately 40,000 aircraft parts. Yet officials estimated that they had origin information for less than 10 percent of all suppliers contributing components and raw materials to those parts.

For an employee who knows the material supplier, that is the practical gap. The government’s summary and your purchasing records describe different layers of the same product. We want to understand what the company knew at the layer where the material entered production, and what it told the customer at the layer where the finished item was sold.

A Magnet Inside the Aircraft Reached the Payment Decision

The origin of a component can affect whether the government accepts the finished system. The report says Lockheed Martin identified prohibited Chinese magnets and notified the Defense Department in 2023 and 2024. The department paused manufacturing while alternative suppliers were identified, then issued national security waivers to accept aircraft with the magnets. It determined that the magnets posed no safety risk.

The report connects that production issue directly to money. A defense official told the Government Accountability Office that payments to the contractor stopped during the production stoppages. The supplier’s identity mattered to the government’s purchasing decision.

In this example, the government made an express acceptance decision through specialty-metal waivers after the contractor disclosed the source. The example shows how material origin can reach acceptance and payment; the applicable materials clause and its exceptions still have to be read for the particular delivery.

The Tungsten Source and the Factory Were Separate Promises

Tungsten Heavy Powder agreed to a $5.6 million civil settlement announced in April 2021 over allegations involving U.S. origin claims. The Justice Department’s settlement announcement concerned seven Israeli purchase orders financed through the U.S. Foreign Military Financing program. The alleged representations covered both U.S.-sourced tungsten and U.S. manufacture, while the government alleged that the company used Chinese tungsten and a factory in Mexico.

The allegations concerned separate promises about the tungsten’s source and the place of manufacture. We see the contradiction plainly: American material and American manufacture on the certificate, Chinese material and a Mexican factory in the government’s account. A purchasing record could bear on one, and a factory’s production record on the other. We would want to understand which promise each certificate made and which part of the business knew the underlying facts.

This financing settlement illustrates the separate promises about material source and manufacture. The later defense materials clause supplies the dated production requirements discussed here; the tungsten allegations supply an example of what a sourcing certificate can misstate.

How to Prove Country of Origin?

Country-of-origin evidence connects the sourcing promise to the records of the work and material that promise describes. For a material-source assurance, the comparison concerns the supplier and material used. For a manufacturing assurance, it concerns the factory and the work performed there. The Tungsten Heavy Powder allegations show why both questions matter in the same transaction.

We connect the company’s representation and the production evidence to the item delivered. With you, we line up the supplier’s certificate and production records with the delivery and the payment or financing request. That connects what the company said about the material to what the government paid for.

Your role may give you a particularly clear view of one part of the transaction. Someone in purchasing may know the actual supplier behind an assurance. Someone in production or quality may know which material went into the delivered item. We work with that knowledge to understand the specific contradiction, who knew about it and how the company used the certificate.

Where a Sourcing Promise Becomes a Whistleblower Case

A sourcing case connects a false origin representation, the company’s knowledge and a government payment or financing decision. The useful question is specific: what did the company say about this material or item to obtain the government’s money, and what did its own records show instead? We examine that question with the contract terms, the material’s history and the transaction together.

A whistleblower case under the False Claims Act can pay 15% to 30% of what the government recovers. If you know why an origin certificate conflicts with the material actually supplied, our whistleblower experts can help turn that contradiction into your strongest sourcing case and bring in defense contractor fraud whistleblower lawyers who understand sourcing disputes.

When You Know Where the Material Came From

If you know a supplier’s magnet, tantalum or tungsten certificate misstates where the material came from, speak with our whistleblower experts about that sourcing promise. We stay beside you through the case, connect what you know about the material to the company’s decisions and the government money, and bring in defense sourcing whistleblower lawyers.