US BIS designates 407 HTSUS codes as Section 232 steel/aluminum derivative products (first inclusions cycle)

Mechanism

This is the first output of the inclusions-process architecture BIS adopted via interim final rule on 2025-05-02 ([2025-05-02-us-bis-section-232-steel-aluminum-inclusions-process](2025-05-02-us-bis-section-232-steel-aluminum-inclusions-process.md)): domestic producers submit product-inclusion requests during periodic filing windows, BIS evaluates on a 60-day clock, and approved codes are added to the Section 232 derivative-products annex. This notice is that first cycle's determination memorandum, adding 407 HTSUS codes covering a broad range of downstream steel and aluminum manufactures. Only the steel/aluminum content value of each product is subject to the 50% duty; non-metal content continues to face whatever reciprocal/Section 301 tariffs otherwise apply — the same "content-based" mechanism used for the original derivative-products list.

Downstream implications

• Confirms the inclusions process functions as a standing, self-widening

tariff perimeter: each cycle (May/September/January filing windows) can add further downstream product categories without a new proclamation.

• Raises compliance burden for importers of finished/semi-finished metal

goods who must now content-value-split steel/aluminum share for tariff purposes across 407 additional tariff lines.

• The September 2025 opening of the next inclusions window

(FR Doc 2025-18008) indicates further cycles will continue to expand coverage.

Open questions

• Full 407-code HTSUS list not reproduced here; downstream users needing the

exact tariff-line schedule should consult the Federal Register annex directly.