Special treatment is set aside for products made with U.S. origin melted/poured steel or smelted/cast aluminum. These tariffs for steel and aluminum products and derivatives became effective on March 12, 2025 by way of a posting by the Secretary of Commerce, though a debate still exists whether that notice needs to be formalized by publication in the Federal Register.

Publication Litany

A slew of other pronouncements and notices throughout February and March attempted to provide clarity around the definitions of impacted products, including the following:
Steel and derivatives CBP then issued CSMS 64384423 to establish the 9903 provisions for steel and derivatives, and the related February 18, 2025 FedReg re steel tariffs was also published, which confirmed the 25% applied to steel and steel derivative products by reference to the Annex 1 listing of tariff numbers. Entry into an FTZ (except under foreign privileged status) and refunds by way of drawback are denied. There is a corresponding Commerce/BIS March 5, 2025 FedReg BIS re steel tariffs published in the Federal Register which summarizes differently the types of steel products with corresponding tariff numbers (listing both the provisions in chapters 1-97 and chapter 99). As a sort of “cheat” sheet, CBP also published the Iron/Steel Products Subject to 232 and Iron/Steel and Aluminum 232 Quick View Chart, which provides charts laying out the order of reporting the classifications and related topics, and also how to report values if not all the value belongs under the corresponding 9903 classification. A similar notice was published for aluminum, see March 5, 2025 FedReg re BIS re Aluminum Tariffs. Aluminum The corresponding publications for aluminum, which carries a 10% additional duty, can be found at CSMS 64384496 and February 18, 2025 FedReg re aluminum tariffs. The quick view chart linked above also includes aluminum products and derivatives.

Documentation and Reporting Challenges

If the product is not 100% steel or aluminum, the importer is instructed to declare the value of the “content.” Does declaring value mean the weight of the product or value based on the price of the shipment? It took until the most recent update to the 232 FAQs to clear up what was meant by paying duty on the content of the aluminum or steel. CBP has finally clarified that means the usual transaction value, i.e., a price that includes not only the value of the actual content of either metal, but also all the other price components a seller would include in his sales price. In other words, as of March 24, 2025, the correct value to declare is the FOB cost of the steel or aluminum. See 232 FAQs.

Specific instructions are provided for reporting primary and secondary countries of smelt and casting. This is because if the initial melting and pouring for steel and the original melting and casting for aluminum are done in the U.S., those processes trigger duty concessions when a further processed product is imported into the U.S. However, this only works if the initial qualifying operations can be properly documented, and the supplier breaks out the values over more than one invoice line. In having a multi-line invoice, the 232 duty can be imposed on only the steel and aluminum content, if that content is not 100% of the value of the import.
Because of these complexities, importers are cautioned to not solely rely on information from their suppliers as the importer is the one would will be held accountable. Consider asking or seeking answers to the following:
1. What additional verifying documentation can you obtain?
2. What can you do to validate the information being provided by your
supplier?
CBP could very well hold up the release of your shipment without clear documentation. Work with your GSM International to assist in securing the necessary supporting documents to mitigate risk in shipments being held or collection of tariffs being inaccurately assessed.