The shift that matters is the base. For many derivative articles the Section 232 duty applies to the metal content value, while the ordinary customs duty applies to the full customs value of the article. Two values, two bases, one entry line structure that has to carry both without mixing them. Importers whose systems store one value per line discover the gap at entry, in the brokers questions, not in their own reports.
Content value comes from the supplier, and it has to be a defensible number: the cost of the steel or aluminium in the article, supported by mill or purchase records, not a percentage guessed by the sales office. Where the content value cannot be established, the exposure is duty on a larger base and a file that cannot answer the first audit question. Get the content declaration into the commercial documents for every derivative SKU.
Steel reporting asks for country of melt and pour: where the steel was originally melted. Aluminium asks for country of smelt and cast, with additional detail on certain origins. These are facts about the metals history that the finished goods maker may not know unless it asked its own supplier, which is why the question now travels up supply chains that never used to exchange it.
Unknown is a reportable answer in narrow circumstances, but it is a poor standing position: it can affect duty treatment, it invites scrutiny, and for some origins the consequences of the metal source are severe, including prohibitions on metal melted in specified countries. A supplier who cannot say where its steel was melted is telling you something about the whole chain. Record the answer per product and per period, because melt source can change when the mill contract changes.
Derivative lists are amended by proclamation and Federal Register notice, adding articles by HTSUS code. Membership is therefore a classification question with a list check on top: is the article classified in a code that appears on the current derivative list, as of the entry date. A product can become a derivative overnight without changing at all, because its code was added.
Build the check into the product customs record: classified code, derivative list status, content value, melt data, reviewed date. Then diarise the review against Federal Register publication, not against the brokers next invoice. The importer of record owns the duty either way; the only choice is whether the file shows the importer looked.
A derivative article can carry ordinary duty on its full value, Section 232 duty on its metal content, Section 301 duty where the origin and code attract it, and antidumping or countervailing duty on top. Quoting any one of those rates as the tariff is how margins get destroyed politely, one accurate sounding number at a time. The landed model needs the stack, line by line, with the base each rate applies to.
Confirm current derivative lists, rates, and reporting requirements with a licensed customs broker before entry. Section 232 actions have been amended repeatedly, rates differ by metal and origin, and exemptions and quota arrangements apply in specific cases that a summary like this cannot settle.
Keep reading: How do Section 301 exclusions expire, and what should importers file before they do?, How do importers use bonded warehouses to delay duty when cash is tight?.
A finished article named on the Section 232 derivative lists by HTSUS code, such as certain nails, cans, and components. For listed steel derivatives the additional duty is generally assessed on the value of the steel content rather than the full article value.
It is the country where the steel was first melted and poured into its initial form, before rolling or manufacturing. It is a fact about the metals origin that the importer must report, obtained from the supplier chain and mill records.
Expect difficulty at entry and audit exposure afterwards. Content based duty needs a supported content value. Press the supplier for mill or purchase evidence, and take broker advice before entering the goods rather than estimating a figure.
No. They stack. Ordinary duty applies to the article, Section 232 duty applies on its stated base, and other actions such as Section 301 or antidumping duties can apply as well where their conditions are met.