Country of Melt and Pour
Also known as: Melt and pour, COMP
Country of melt and pour is the country where raw steel was first produced in a steel-making furnace in a liquid state and poured into its first solid shape. It is not where the steel was rolled, forged or finished. US importers have been required to report it for certain steel articles since 21 November 2024, and it is normally read from the mill test report.
Country of melt and pour is the country where raw steel was first produced in a steel-making furnace in a liquid state and then poured into its first solid shape.
The definition is deliberately narrow. It points at one moment in the material's life — the furnace and the first casting — and nothing after it. Where the steel was subsequently rolled, forged, machined, coated or warehoused is irrelevant to the answer.
Why it is asked for
US Customs and Border Protection has required importers to report country of melt and pour for certain imported steel articles since 21 November 2024, using the ISO country code for the country where the steel was originally melted and poured. The requirement is narrower for derivative steel articles, where what has to be reported depends on the country the derivative is imported from, and an applicability code is used where an ISO code is not provided.
The rules around Section 232 steel measures have been revised repeatedly and the duty consequences attached to provenance change with them. Treat the current CBP guidance as the authority on what must be reported today rather than any secondary summary, this one included.
Why it matters to a forging shop
Most forging shops are not the importer of record, so the filing obligation is usually someone else's. The records problem still lands on the shop, for a simple reason: melt and pour is a property of the heat, and the shop is the party holding the heat.
If a customer downstream needs to state provenance, they will ask the shop what the material was melted from. That question is answerable only if the value was captured when the material came in and carried forward with the heat. It cannot be reconstructed later from purchase orders, because who you bought from is not where the steel was poured — a distributor in one country routinely sells material melted in several others.
The practical consequence is that country of melt and pour belongs alongside the heat number as a receiving-time field, read off the mill test report, not derived.
Where it goes wrong
Three failures account for most of it:
- Inferring it from the supplier. A supplier's country tells you nothing about the furnace.
- Inferring it from country of origin. These are different tests answering different questions, and they frequently disagree.
- Recording it per shipment rather than per heat. One delivery can contain several heats melted in different countries, so a single value on the receipt is either wrong or unusably vague.
What it does not cover
Melt and pour identifies a country, not a mill, not a quality level and not a compliance status. It is one attribute of a heat among several, and it is only as reliable as the certificate it was read from.
Common questions
Is country of melt and pour the same as country of origin?
No, and conflating them is the common mistake. Country of origin follows customs rules about substantial transformation. Country of melt and pour is fixed at the furnace: it is where the raw steel was first melted and poured, regardless of where it was rolled, forged or finished afterwards. A bar melted in one country and rolled in another has one melt-and-pour country and may have a different country of origin.
Where do I find the country of melt and pour?
It is normally stated on the mill test report for the heat. If the certificate does not show it, the mill is the only reliable source — it cannot be inferred from the supplier's location, the shipping route or the country the material was purchased from.
Does a forging operation change the country of melt and pour?
No. Melting and pouring happen once, at the mill. Nothing a forging shop does afterwards changes where the steel was first poured, which is exactly why the value has to be carried forward from the incoming certificate rather than recalculated.
Related terms
- Heat Number — The identifier a steel mill assigns to one batch of metal poured from a single melt, and the unit material properties are guaranteed against.
- Mill Test Report — The certificate a steel mill issues for a heat, recording its chemical composition and mechanical properties, and what a forging shop is expected to do with it.
- EN 10204 Inspection Documents — The four types of inspection document defined by EN 10204:2004 — 2.1, 2.2, 3.1 and 3.2 — and what distinguishes specific from non-specific inspection.