Does Sintering Change Country of Origin? Substantial Transformation in Plain English

Scenario: a supplier says “we sinter the carbide here, so it is made here”. Direct answer: that sentence cannot settle origin. U.S. Customs and Border Protection uses a fact-specific test called substantial transformation, and one process step does not decide it.

The test, as CBP describes it

The test is substantial transformation, and it follows the process.

• CBP uses the substantial transformation standard to determine country of origin for non-preferential purposes, which include marking. A new and different article must emerge, “having a distinctive name, character or use” (Federal Register, 2021).
• CBP’s marking guidance defines the country of origin as the country of manufacture, production or growth. Further work in a second country changes the origin only if it is a substantial transformation, meaning a new article with a different name, character and use.
• CBP applies the test case by case, or through codified “tariff shift” rules in some contexts. The same notice acknowledges that case-by-case application can involve subjective judgments.

Why sintering alone does not answer the question

Sintering turns pressed powder into a solid body. Whether that creates a “new and different article” depends on what came in, what went out and what else happened. Where the tungsten raw material was mined, where powder was made, where inserts were pressed, where they were brazed to a steel body and where the finished edge was assembled can all matter. A statement about one step leaves the others open.

Questions that make a useful conversation

Origin depends on where the goods changed form, so the conversation has to follow the process.

1. Which production steps happen in which country, and in what order? The sequence is the argument.
2. What is the form of the goods when they cross each border? Powder, inserts and finished blades can classify differently.
3. What HTS classification does each stage carry, and does it change? A change of heading can decide origin.
4. Has anyone obtained a binding ruling for this product or a close analogue?
5. Who is responsible if CBP disagrees with the declared origin?

What this article does not do

It does not say which country is the origin of any product, and it gives no duty implications. Origin affects marking, duty and eligibility for some government purchases. Because the test depends on facts, ask a licensed customs broker or trade counsel, and consider a binding ruling request if the decision is material.