CSMS #68253075 · GUIDANCE: Section 232 Duties on Imports of Aluminum, Steel, and Copper

Brief takeaway: A new Section 232 Proclamation adds duties on certain steel, aluminum, and copper articles and their derivatives from all countries, and importers should review whether their goods fall within its scope.

What changed: According to the notice, an April 2, 2026 Proclamation under Section 232 imposes 10-50% additional duties on the full customs value of certain steel, aluminum, and copper articles and their derivatives from all countries, effective April 6, 2026. The notice states that goods listed as articles or derivatives of more than one metal are subject to only one of the respective duty rates, even if they contain multiple metals.

Who's affected: The notice cites imports of steel, aluminum, and copper articles and their derivatives from all countries, and references HTSUS Chapters 72, 73, 74, and 76. It states that goods in the annexes with no aluminum, steel, or copper content are not subject to the duties, and that annex goods outside those four chapters containing less than 15 percent aggregate weight of the applicable metal(s) are not subject.

What to review:
- Review whether your products appear in the Proclamation's annexes.
- Confirm with your broker the metal content and aggregate weight percentages of your goods.
- Check whether your goods are classified in Chapters 72, 73, 74, or 76.
- Confirm the applicable duty rate and effective date with your broker or CBP.

This is general information, not legal advice and not a compliance determination — confirm specifics with a licensed customs broker or trade counsel.