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DFARS Specialty Metals: What Aerospace Buyers Must Verify Before They Source

Jun 02, 2026

A finished aerospace part can pass every dimensional check on the drawing and still fail the contract. The reason is rarely the geometry.

A finished aerospace part can pass every dimensional check on the drawing and still fail the contract. The reason is rarely the geometry. It is the metal. Under the Defense Federal Acquisition Regulation Supplement, the origin of the specialty metal inside a delivered item is a compliance requirement — and a single noncompliant heat lot anywhere in the supply chain can render the end item ineligible for delivery.

For procurement teams, the specialty metals restriction is one of the least understood clauses in a defense contract and one of the most expensive to get wrong. This guide explains what the rule covers, where the traps are, and what to verify before a purchase order goes out.

What the Specialty Metals Restriction Requires

The restriction lives in two DFARS clauses: 252.225-7008 and 252.225-7009. In plain terms, specialty metals incorporated into items delivered under a covered defense contract must be melted or produced in the United States or in a qualifying country defined by the DFARS.

The rule governs the melt source — where the metal was originally melted — not where it was machined, finished, or assembled. A part cut from foreign-melted bar stock in a domestic shop is still a foreign-melt part. Country of machining does not cure country of melt.

This is the single most common misreading of the clause. Domestic machining is necessary for many programs. It is not sufficient for specialty metals compliance.

What Counts as a Specialty Metal

The definition is specific, and it is broader than most buyers assume. Specialty metals include:

Titanium and titanium alloys — the category most associated with the rule, and the most common on airframe and engine hardware.
Nickel and iron-nickel base alloys containing nickel at or above 30 percent by weight, and cobalt base alloys at or above 25.7 percent cobalt — the superalloys used in hot-section and high-stress components.
Zirconium and zirconium base alloys.
Certain steels with a maximum alloy content exceeding defined thresholds for elements such as manganese, silicon, and copper.

If a part is machined from any of these, the melt-source rule applies unless an exception does. A program team that assumes the clause only touches titanium will miss the alloy steel and nickel superalloy parts on the same bill of materials.

The Exceptions That Actually Apply

The restriction has carve-outs, and knowing them prevents both noncompliance and unnecessary cost.

Commercially available off-the-shelf items. Most COTS items are exempt, with a narrower rule for COTS items that are themselves specialty metal mill products. Fasteners are treated under their own specific provisions.

Minimum content. A part is treated as compliant if the noncompliant specialty metal does not exceed two percent of the total weight of all specialty metals in that part. This is a de minimis allowance, not a loophole — it is measured per part, and it is small.

Electronic components. Specialty metals contained in electronic components are generally outside the restriction.

The exceptions are real, but they are narrow and fact-specific. A supplier who waves off the clause by citing an exception should be able to name which one and show why it applies.

Flow-Down Is Where Programs Break

The specialty metals clause flows down through every tier of the supply chain. The prime imposes it on the first-tier supplier, who imposes it on the material distributor, who relies on the mill. Compliance at the end item depends on compliance at the mill — several tiers removed from the buyer who signs the contract.

That distance is the risk. A first-tier machine shop can be fully domestic, fully certified, and entirely sincere, and still deliver a noncompliant part because a distributor substituted a foreign-melt heat lot to hold a delivery date. The substitution is invisible on the finished part. It is visible only on the paperwork — if the paperwork is read.

When a noncompliant part reaches a prime's receiving dock, the options are all bad: a waiver request that delays the program, a scrap-and-remake that costs the schedule, or a domestic non-availability determination that may not be granted. None of them are cheap.

How to Read a Mill Certificate

The document that resolves the question is the certified material test report — the mill cert, or CMTR. It travels with the material from the mill through every tier. Three things on it decide compliance.

Melt source and country of melt. The cert should state where the metal was melted. If the country is the United States or a listed qualifying country, the melt-source test is met. If the field is blank, ambiguous, or names a non-qualifying country, the material is a compliance problem regardless of how good the chemistry looks.

Heat and lot number. The cert ties the chemistry and mechanical properties to a specific heat lot. That heat-lot number is the thread that connects the finished part back to the mill. A part the supplier cannot trace to a heat lot cannot be proven compliant.

Specification and chemistry. The cert confirms the material meets the called-out specification — for example, an AMS titanium or nickel alloy spec — with the actual measured chemistry, not a nominal grade.

A supplier whose quality system links every finished part to a CMTR with a clean melt source is a supplier whose compliance survives an audit years after delivery. A supplier who cannot produce the cert on demand has a gap that will surface at the worst possible moment.

What a Domestic, ITAR-Registered Supplier Solves

The specialty metals rule is one more reason the reshoring conversation in aerospace has shifted from price to supply-chain integrity. A domestic supplier that sources from domestic and qualifying-country mills, retains the mill certs, and ties every heat lot to every part removes a category of risk that a distant or undocumented source cannot.

That is the difference between a vendor who ships a part and a partner who can prove the part is eligible to fly.

BoldX Industries — Material Compliance and Traceability

BoldX Industries machines precision aerospace and defense components with full material traceability, retaining certified material test reports and tying every finished part to its heat lot within an AS9100D quality management system. BoldX is ISO 9001:2015, AS9100D, and IATF 16949:2016 certified, NADCAP-accredited for chemical processing, and ITAR registered. All work is performed in Batavia, Ohio.

Before You Source the Material

Three actions reduce compliance risk before the purchase order:

Confirm the DFARS specialty metals clause is flowed down in writing, and that the supplier accepts it at every tier — including the material distributor.
Require the certified material test report with the melt source identified, and confirm the country of melt is the United States or a qualifying country.
Verify the supplier can trace the finished part to a specific heat lot. If they cannot, neither can the prime — and neither can the auditor.

A part that meets the print but fails the clause is still a rejected part. Verify the metal before you verify the geometry.

BoldX Industries

NADCAP-accredited under AC7108. AS9100D certified. ITAR-registered. Precision machining, value-added assembly, and QPL-qualified circular hermetic connectors for MIL-DTL-5015, 38999, 83723, and 26482. Batavia, OH. U.S. owned and operated. getboldx.com

If you are qualifying a connector supplier for a flight-critical program and want a walkthrough of our QPL scope, our most recent audit posture, and how we support first-article packages, I'm reachable directly.