[Home](/)/[Resources](/resources)/Section 232 Tariffs on Electronics United StatesTariffsTrade # Section 232 Steel and Aluminum Tariffs: Impact on US Electronics Hardware Importers The Section 232 regime has been in force since 2018 and was expanded in 2020 to cover derivative articles — meaning finished products where steel or aluminum dominates. For electronics companies importing enclosures, chassis, heatsinks, and structural hardware, understanding whether your product is covered, and whether it stacks with Section 301, is a material cost question. Copy Link[Share on WhatsApp](https://wa.me/?text=https%3A%2F%2Fkrono-labs.com%2Fguides%2Fus-section-232-tariffs-electronics) At a glance Steel tariff rate 25% on covered articles and derivatives Aluminum tariff rate 10% base; 25% from certain countries Legal authority Section 232, Trade Expansion Act of 1962 Proclamation year 2018 (base); 2020 (derivative expansion) Ally exemption mechanism TRQ with melt-and-pour origin requirement ## What Section 232 covers and why it matters for electronics hardware ### Section 232 Authority vs. Section 301: Fundamentally Different Legal Bases Section 232 of the Trade Expansion Act of 1962 authorizes the President to impose tariffs on imports that threaten national security — it is an executive proclamation power, not a trade remedy. Section 301 of the Trade Act of 1974 targets unfair trade practices, specifically China's IP theft and forced technology transfer. The distinction matters because 232 and 301 operate through entirely separate legal frameworks, have different exclusion processes, and can be stacked on the same import — there is no offset or interaction between them. An electronics product imported from China that contains steel can face 25% (232) + 25% (301 List 3 or 4A) simultaneously, applied to the same customs value. ### Steel and Aluminum Derivative Products: The 2020 Expansion The original 2018 Section 232 proclamations covered steel and aluminum mill products. In January 2020, the President expanded coverage to 'derivative' steel and aluminum articles — finished goods that are predominantly steel or aluminum by value or weight — under HTS heading 9903.80.xx. For electronics, this captures enclosures, chassis, heatsinks, racks, and structural components where steel or aluminum content is the dominant material. CBP classifies derivative articles under the 9903.80 HTS codes at entry; importers who misclassify and omit 232 duties face back-assessment, interest, and penalties under 19 USC § 1592. ### Ally Exemptions: EU, UK, Japan, and 'Melt and Pour' Requirements Following Section 232 disputes, the US negotiated tariff-rate quota (TRQ) agreements with the EU (effective January 2022), UK (effective June 2022), and Japan (effective April 2022) that exempt certain volumes of steel and aluminum from 232 tariffs. These agreements contain a critical condition: the steel or aluminum must meet 'melt and pour' (for steel) or 'smelt and cast' (for aluminum) origin requirements — the steel must have been melted and poured in the qualifying country, not merely processed there from third-country raw material. Electronics importers sourcing components from EU or UK manufacturers must verify supply chain origin at the melt/smelt stage, not just at the final fabrication stage. ### The Section 232 Exclusion Process: Regulations.gov and the BIS Portal Importers may request product-specific exclusions from Section 232 tariffs through the Department of Commerce's Bureau of Industry and Security (BIS). Exclusion requests are filed at regulations.gov and must demonstrate that the specific product is not produced in the US in sufficient and reasonably available quantities of satisfactory quality, or that specific national security considerations justify the exclusion. Domestic producers may object within 30 days. BIS has historically granted exclusions at varying rates by product category; approval is not guaranteed and typically takes 90–180 days. Approved exclusions are product-specific and retroactive to the date of filing. ### Tariff Stacking: Section 232 + Section 301 on the Same Entry For electronics hardware imported from China that contains covered steel or aluminum, both Section 232 derivative tariffs and Section 301 tariffs can apply simultaneously to the same entry, computed on the same customs value. There is no netting, offset, or sequential application — both ad valorem rates apply to the entered value of the goods. A Chinese-origin steel electronics enclosure classified under an HTS code subject to 301 List 3 (25%) and 232 derivative coverage (25%) faces a 50% combined tariff rate before MFN column 1 duties. This stacking effect is the primary driver of electronics supply chain restructuring away from Chinese-origin metal components. ### CBP's Role in Derivative Coverage Determinations CBP makes first-line determinations on whether a specific product constitutes a 'derivative' article subject to Section 232 at the port level. Because the derivative article rules focus on whether steel or aluminum predominates by value or weight, CBP may request cost breakdowns, bills of materials, and supplier invoices to verify classification. Products at the margin — assemblies where metal content is significant but not dominant — are subject to CBP challenge. Binding rulings under 19 CFR Part 177 are available and provide certainty; they typically take 30–60 days and are publicly available in CBP's CROSS database. ## How to assess and manage your Section 232 exposure 01 Classify your product under its primary HTS code and separately assess whether any steel or aluminum content in the product makes it a derivative article under the Section 232 proclamations — check the CBP CROSS database and Federal Register notices for applicable HTS 9903.80.xx cross-reference tables. 02 Calculate your 232 duty exposure per shipment: multiply the applicable rate (25% for steel derivatives, 10% or 25% for aluminum derivatives) by the entered customs value of the goods. If the product is also China-origin, layer in the applicable Section 301 rate — model the combined tariff liability explicitly. 03 Determine country of origin for the steel or aluminum content in your product. If sourced from an EU, UK, or Japanese supplier, verify that the material satisfies the 'melt and pour' or 'smelt and cast' origin requirement — get written supplier certifications documenting the melt/smelt origin. Do not assume EU fabrication equals EU 232-exempt origin. 04 If your product is covered and you believe a US-produced equivalent is unavailable, evaluate whether an exclusion request is viable. Pull comparable exclusion determinations from the BIS public database to assess approval likelihood for your product category before investing in the filing. 05 File an exclusion request at regulations.gov if warranted. The request must include: the specific HTS code, a detailed product description, evidence of unavailability of US supply, and the volume and value of planned imports. File early — BIS processing times are 90–180 days and the exclusion is retroactive to filing date, not to the date duties began accruing. 06 If the exclusion is denied or while it is pending, evaluate sourcing alternatives: non-covered countries of origin for steel/aluminum fabrication, substitution of non-metallic materials where feasible, or qualification of US domestic suppliers for the affected components. 07 Build the 232 tariff cost into your product pricing model and supply chain cost-of-goods analysis. Treat the tariff as a structural input cost, not an anomaly — the Section 232 regime has been in place since 2018 and successor administrations have maintained and in some cases extended it. ## Frequently asked questions ### Do Section 232 tariffs apply to finished electronics that contain steel or aluminum? It depends on whether the finished product qualifies as a 'derivative' article under the 2020 expansion of the 232 proclamations. The test is whether steel or aluminum predominates in the product by value or weight. A steel electronics enclosure or chassis where the metal content is the dominant material by value is likely a derivative article subject to the 25% steel tariff under HTS 9903.80.xx. A finished circuit board assembly where the metal content (solder, traces, mounting hardware) is incidental to the total product value is unlikely to qualify. Products in the middle — mixed assemblies with significant but not dominant metal content — require a fact-specific analysis and potentially a CBP binding ruling. ### What's the difference between a Section 232 exclusion and a Section 301 exclusion? Section 232 exclusions are administered by the Department of Commerce's Bureau of Industry and Security (BIS) and are granted when the specific product is not domestically available in sufficient quantity or quality, or when national security considerations support exclusion. Section 301 exclusions are administered by the Office of the US Trade Representative (USTR) and have gone through multiple rounds of reinstatement and expiration since 2018. The two exclusion processes are entirely separate — an approved 232 exclusion provides no relief from 301 tariffs, and vice versa. For Chinese-origin metal electronics components, you may need to pursue both processes simultaneously to address full tariff exposure. ### Can products from the EU or UK avoid Section 232 tariffs? Partially and conditionally. The EU-US and UK-US tariff-rate quota agreements exempt certain volumes of steel and aluminum from the 232 tariffs — but only for material that was melted and poured (steel) or smelted and cast (aluminum) in the EU or UK, respectively. Material fabricated in the EU from Chinese, Russian, or other third-country raw steel or aluminum does not qualify for the exemption, even if the finished component was manufactured entirely in the EU. The exemption applies within quota limits; once the quota is filled for a given period, the standard 232 rate applies to additional imports even from qualifying countries. ### How do Section 232 and Section 301 tariffs stack on the same product? Both apply simultaneously and are both computed on the same entered customs value — there is no interaction, netting, or offset mechanism. For a Chinese-origin derivative steel article covered by both regimes, you pay 25% (232) plus the applicable 301 rate (7.5%, 25%, or higher depending on the list and product) plus the standard MFN column 1 duty rate, all calculated on the entered value. The combined effective tariff rate can easily exceed 50% for Chinese-origin metal electronics components on Section 301 List 3 or 4A. This stacking is not a tax calculation error — it is the intended result of two independent legal authorities operating concurrently. **Disclaimer:** Educational resource only. Regulatory requirements change frequently. Consult a licensed US customs broker, trade attorney, or compliance specialist before making decisions. 🇺🇸 US roadmap for your product Every standard, document, and test that applies — free, no account required. 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