Commerce proposes Section 232 duties on 14 more derivative-product groups

The Bureau of Industry and Security published a request for comments on August 6, 2026 proposing to bring 14 additional derivative-product groups within the Section 232 aluminum, steel, and copper tariffs. Comments must be received by August 27 through regulations.gov docket BIS-2026-0331, with XRIN 0694-XC166 referenced in submissions.

The proposed coverage is:

• Non-lamellar aluminum powder — HTSUS 7603.10.0000.
• Brass-wind musical instruments and their parts and accessories — HTSUS 9205.10.0000 and 9209.99.4080.
• Parts of welding machines and apparatus — HTSUS 8515.90.2000.
• Free-standing floor safes — HTSUS 8303.00.0000.
• Electric conductor cables — HTSUS 8544.49.2000, 8544.49.3040, 8544.49.3080, and 8544.60.4000.
• Fire extinguishers — HTSUS 8424.10.0000.
• Parts of heat-exchange units — HTSUS 8419.90.3000.
• Parts of linear-acting hydraulic power engines and motors — HTSUS 8412.90.9005.
• Mobile lifting frames on tires and straddle carriers — HTSUS 8426.12.0000.
• Other self-propelled cranes and mobile lifting frames — HTSUS 8426.41.0090.
• Tanker trailers and tanker semi-trailers — HTSUS 8716.31.00.
• Self-loading or self-unloading agricultural trailers and semi-trailers — HTSUS 8716.20.00.
• Other trailers and semi-trailers — HTSUS 8716.40.00.
• Filled steel containers holding specified propane, oxygen, or propene — HTSUS 2711.12.0020, 2804.40.0000, and 2901.22.0000.

Commerce proposes that most of the listed products generally be subject to a 25 percent tariff if added. The notice proposes treatment under the mobile-industrial-equipment provisions of Proclamation 11032 for the specified cranes, lifting frames, and straddle carriers; a 15 percent tariff for the specified self-loading or self-unloading agricultural trailers; and a 50 percent tariff on the metal-container value, not the contents, for the specified filled steel containers.

This is a comment notice, not an operative tariff action. It does not create a new Chapter 99 reporting requirement or direct CBP to collect the proposed duties. Commerce specifically requests information on metal intensity, import volumes and national-security effects, domestic capacity, and economic effects.

Action items

• Screen purchase orders, classifications, and entry forecasts against the complete HTSUS list in the notice.
• Quantify the proposed treatment separately from existing Section 232, Section 301, ordinary-duty, and AD/CVD exposure.
• Gather product composition, metal-value, sourcing, volume, domestic-availability, and downstream-cost evidence if submitting comments.
• File by August 27 under docket BIS-2026-0331 and follow the notice's separate public and business-confidential submission rules.
• Keep current entry treatment unchanged unless a later operative action and CBP instructions require a change.