Commerce Proposes 14 New Section 232 Derivative Categories: What Is Covered and What to Check Before August 27
The Commerce Department's Bureau of Industry and Security published a Federal Register notice on August 6, 2026, proposing to include 14 additional derivative articles within the scope of Section 232 duties on aluminum, steel, and copper. The notice was released for public inspection on August 4. Comments must be received by August 27, 2026.
This post covers the proposed categories and rates, a classification detail in the HTS list that is easy to misread, how the inclusions process now works, and what importers should do during the comment window.
The proposed categories
The notice identifies 14 categories of derivative articles: aluminum powder, brass-wind musical instruments and their parts and accessories, parts of welding machines and apparatus, floor safes, certain electric conductor cables, fire extinguishers, parts of heat exchange units, parts of certain hydraulic engines and motors, certain self-propelled cranes and mobile lifting frames and straddle carriers, tanker trailers and semi-trailers, self-loading or self-unloading trailers and semi-trailers for agricultural purposes, certain other trailers and semi-trailers, and certain filled steel containers.
The specific HTSUS classifications include 7603.10.0000 for aluminum powder, 9205.10.0000 and 9209.99.4080 for brass-wind instruments and parts, 8515.90.2000 for welding machine parts, 8303.00.0000 for floor safes, 8544.49.2000, 8544.49.3040, 8544.49.3080, and 8544.60.4000 for certain electric conductor cables, 8424.10.0000 for fire extinguishers, 8419.90.3000 for heat exchange unit parts, 8412.90.9005 for certain hydraulic engine and motor parts, 8426.41.0090 for certain cranes and lifting equipment, and 8716.31.00, 8716.20.00, and 8716.40.00 for the trailer categories.
A classification detail worth catching
Some summaries circulating this week group three HTS codes, 2711.12.0020, 2804.40.0000, and 2901.22.0000, with the trailer categories. Those codes cover propane, oxygen, and propylene respectively. In the Federal Register notice they fall under the separate category of certain filled steel containers.
The distinction matters for anyone scanning the list. An importer of propane in steel cylinders reading a summary organized around trailers would have no reason to look further. The proposed coverage sits in the container, not the contents, which follows the same logic BIS and CBP have applied to other packaged goods under Section 232, where the metal packaging is the target rather than what is inside it.
If you import gases or similar products in steel containers, check the notice directly rather than relying on category headings in secondary coverage.
Proposed rates
Commerce proposes a 25% Section 232 rate for most of these derivative products. The cranes, mobile lifting frames, straddle carriers, and the trailer categories would be subject to 15%.
The 15% tier tracks the structure established in the April 2026 proclamation, which set a temporary reduced rate through 2027 for certain metal-intensive industrial and equipment categories.
As with other derivative articles, Section 232 duties apply to the steel, aluminum, or copper content value in the product. The non-metal content remains subject to reciprocal and other applicable tariffs, assessed on a separate line of the entry summary. Determining and documenting the metal content value is what drives the actual duty calculation, and CBP has been clear that an importer unable to document that value can have the full entered value subjected to the Section 232 rate.
How the inclusions process reached this point
Understanding the mechanism helps explain why additions like this can now arrive without much warning.
BIS established the Section 232 inclusions process in an interim final rule published May 2, 2025, after the exclusions process was terminated in February 2025. The inclusions process created recurring two-week submission windows three times per year, in May, September, and January, during which domestic producers could request that additional derivative articles be brought within scope.
The first cycle produced a substantial expansion. In August 2025, BIS added 407 HTSUS codes to the derivative products list, covering articles such as air compressors, cables, steel mill rolls, and hydraulic pump components. BIS declined to include 60 additional codes at that time because they were subject to other ongoing investigations.
The window-based process was subsequently terminated. Under the current structure, the Commerce Secretary and the U.S. Trade Representative can add derivative articles on a rolling basis following a joint determination, and can reconsider prior inclusion decisions, including by modifying or reversing them.
The practical consequence for importers is that scope changes no longer follow a predictable calendar. Products can be proposed for inclusion at any point, with comment windows measured in weeks rather than months. A periodic review of your HTS codes against the current derivative lists is more useful than waiting for a scheduled window.
What to do during the comment window
A few steps are worth taking before August 27.
Check your specific HTS codes against the notice directly rather than against summary coverage, given the classification grouping issue described above. The notice is FR Doc 2026-15961, published August 6, 2026.
If your codes appear, model the duty impact using your actual metal content values rather than full entered value. For many derivative products the difference between the two is substantial, and the calculation depends on documentation you may need to build or improve.
Consider filing comments. Comments may be submitted at any time but must be received by August 27. Filing serves two purposes: it puts your position on scope, classification, or supply chain impact into the administrative record, and it establishes participation if you want to raise concerns later in the process.
Review your documentation for metal content valuation. If these categories are added, the ability to separate metal content value from non-metal content value on the entry summary determines what you actually pay.
We are reviewing client import programs against the proposed categories and can help assess exposure or prepare comments before the deadline. Reach out to your ShipTech account manager if you would like to discuss your specific products.