14 More Products Could Join Section 232: Comments Close August 27 — The Full HTS List, the Proposed Rates, and the Playbook Before Inclusion Hits

14 More Products Could Join Section 232: Comments Close August 27 — The Full HTS List, the Proposed Rates, and the Playbook Before Inclusion Hits

While everyone watched the Canada fight, the quieter machinery of the 2026 tariff wall kept moving. On August 6, the Bureau of Industry and Security published a Federal Register notice (91 FR 50756) proposing to add 14 derivative articles to the scope of the Section 232 tariffs on steel, aluminum, and copper. The comment window is short and it is almost gone: comments must be received by Wednesday, August 27, 2026 — two days from now.

This is the inclusions process created by Proclamation 11021 (April 2, 2026) working as designed: Commerce and USTR can jointly pull additional derivative products into the 232 net whenever they determine imports threaten the objectives of the original actions. The April restructure built the framework; the June proclamation tiered the rates; this notice is the first big expansion round through that machinery — and it reaches well past what most people picture as "steel and aluminum products."

The Full Proposed List, With HTS Codes and Proposed Rates

Screen your SKUs against these lines today, not after the determination publishes:

Proposed at 25% (clause 3 of Proclamation 11021):

- Aluminum powder, non-lamellar structure — HTSUS 7603.10.0000 - Brass-wind musical instruments and their parts and accessories — HTSUS 9205.10.0000, 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, 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 - Tanker trailers and tanker semi-trailers — HTSUS 8716.31.00 - Other trailers and semi-trailers — HTSUS 8716.40.00

Proposed at the mobile-industrial-equipment rates of Proclamation 11032 (June 1, 2026):

- Mobile lifting frames on tires and straddle carriers — HTSUS 8426.12.0000 - Other self-propelled cranes and mobile lifting frames — HTSUS 8426.41.0090

Proposed at 15% (clause 5 of Proclamation 11021, agricultural equipment):

- Self-loading or self-unloading trailers and semi-trailers for agricultural purposes — HTSUS 8716.20.00

Proposed at 50% (clause 2 of Proclamation 11021):

- Filled steel containers of liquefied propane (HTSUS 2711.12.0020), oxygen (HTSUS 2804.40.0000), and propene/propylene (HTSUS 2901.22.0000) — with an important carve-out: the 50% applies only to the value of the metal container, not the contents. The container draws the duty because the same container imported empty already does.

If your exposure question is really a metal-content valuation question — how much of an article's value the 232 duty actually attaches to — the mechanics are in our 15% de minimis metal content test guide.

Who Actually Gets Hit

Read past the tuba jokes making the rounds in trade-compliance newsletters — the money in this list is in transportation equipment and industrial components:

Trailer fleets and dealers. Three separate trailer lines — tanker trailers, agricultural self-loaders, and the catch-all "other trailers and semi-trailers" under 8716.40.00 — cover a large share of the imported trailer market. A 25% layer on top of existing duties reprices imported trailers overnight, and the catch-all line is broad.

Construction and port equipment buyers. Self-propelled cranes, mobile lifting frames, and straddle carriers are six- and seven-figure machines. Even at the tiered Proclamation 11032 rates, the dollar exposure per unit is enormous, and delivery lead times mean machines ordered months ago may arrive after an inclusion takes effect.

Electrical and HVAC distributors. Conductor cables across four HTS lines, heat-exchanger parts, welding machine parts, hydraulic components — these are high-volume, thin-margin distribution categories where a 25% duty is not absorbable.

Propane and industrial gas suppliers. Filled propane, oxygen, and propylene cylinders draw the 50% steel-container rate on the container value. Container value is a fraction of the landed cost, but for high-turn cylinder programs it compounds fast.

Music retailers and band suppliers. Brass instruments are the odd item out, but the proposed 25% covers the instruments and their parts and accessories. Nearly all student-line brass is imported.

Why the Effective Date Could Land With Little Warning

Two features of this process should shape your planning:

First, there is no APA rulemaking requirement. The notice states plainly that notice-and-comment rulemaking does not apply because the action involves a military function of the United States. BIS is taking comments as a courtesy to inform the decision, not because a procedural clock constrains it. Once comments close August 27, Commerce and USTR can issue a joint determination on their own schedule.

Second, prior 232 actions have set the tempo precedent. The drone and UAS action goes live September 3. The April restructure moved from proclamation to collection in weeks. And 232 actions historically publish with no in-transit exemption — the entry date controls, regardless of when the goods sailed. A determination published in September with an effective date days later would be entirely in character. Assume weeks of notice, not months, and plan against the possibility of less.

The Playbook: Five Moves Before the Determination

1. Screen your SKUs against the 14 HTS lines now. This is a bounded, finite list — the screen takes an afternoon. Anything you import under these subheadings, or anything your broker might classify into the 8716.40.00 catch-all, goes on the watch list with its annual volume and duty math attached.

2. If you have a case, file it by Wednesday. Comments go to regulations.gov under docket BIS-2026-0331, referencing XRIN 0694-XC166. BIS specifically asked for input on the metal intensity of these products, import volumes, whether domestic production can meet demand, and economic effects. If domestic supply genuinely cannot cover your category — a real argument for several of these lines — the comment file is the only formal place that argument gets made. After Wednesday, you have no voice in the process.

3. Accelerate what you can. Goods entered for consumption before an inclusion's effective date owe nothing new. For covered-list SKUs already on the water or ready to ship, pulling entries forward is the cheapest insurance available, exactly as it was before the Section 122 expiration and before August 19. Model the stack with the tariff stacking calculator and the landed cost calculator to see which SKUs justify expedited moves.

4. Get the bonded warehouse rule right — it cuts the other way here. Warehouse duty is assessed at the rate in effect on the withdrawal date, not the entry date. That rule made bonded storage the winning position through the Section 122 sunset and the Canada whipsaw, but for goods on this list it is a warning: covered inventory sitting in bond when an inclusion takes effect owes the new rate on withdrawal. If you are holding proposed-list goods in bond today, the determination window is your deadline to withdraw at current rates. What bonded storage still buys you is optionality — deferral while the proposal is pending, and the ability to re-export without ever owing U.S. duty if the duty makes the goods uneconomic here.

5. Check your FTZ posture. Merchandise subject to Section 232 must generally be admitted to a foreign-trade zone under privileged foreign status once covered, locking the duty character at admission. If you operate through a zone, the same admission-timing logic that ran before the August 19 FTZ deadline applies here: goods admitted with privileged foreign status before an inclusion's effective date keep their pre-inclusion character. Bonded vs. FTZ covers which structure fits which problem.

Importers running this screen without clean line-level duty data often reconstruct the stack per HTS line with landed-cost and classification software such as Zonos before deciding which SKUs justify accelerated entries or bonded routing. (Disclosure: this is an affiliate link — FreightFigures may earn a commission if you sign up, at no additional cost to you. See our full affiliate disclosure.)

The Structural Read

The 2026 pattern is now unmistakable: the tariff wall grows by accretion. Section 301 rebuilt the country layer in July. Section 338 added the Canada layer in August. And the 232 inclusions process adds product layers on a rolling basis — auto parts in April, drones in September, and now 14 more categories queued behind a comment window that closes in two days. Each round follows the same mechanics: a short public window, a joint determination on no fixed schedule, an effective date with little lead time, and no in-transit relief.

That cadence rewards the same thing every round: entry-timing control. Importers who can choose when goods enter for consumption — accelerating ahead of effective dates, deferring in bond while rules are in flux, re-exporting when the math dies — keep paying less than importers who enter by default. If you are routing freight through the Southeast, a CBP-bonded facility near the Port of Charleston keeps that control in your hands: bonded storage for duty deferral, withdrawal on your schedule, re-export without duty if the goods are not staying. The bonded warehouse guide covers the mechanics, and bonded warehouse cost per pallet covers what the option costs to hold.

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