Section 232 Tariffs on Steel & Aluminum: Complete Guide for Importers (2026)

What are Section 232 Tariffs?

Section 232 tariffs are additional duties imposed on steel and aluminum imports into the United States under Section 232 of the Trade Expansion Act of 1962, based on national security concerns. First imposed in March 2018, these tariffs add 25% on steel products and 25% on aluminum products (increased from 10% in 2025) on top of regular HTS duty rates.

Current Rates (2026)

• Steel: 25% additional tariff on all steel imports (HTS Chapters 72-73 and select headings in other chapters)
• Aluminum: 25% additional tariff on all aluminum imports (HTS Chapter 76 and select headings)
• Derivatives: certain downstream products (nails, staples, bumpers, etc.) are also covered
• These are IN ADDITION to regular MFN duty rates — you pay both

Which Products are Affected?

Section 232 tariffs apply broadly across steel and aluminum product categories. Key affected HTS chapters and headings:

• Chapter 72: Iron and steel (flat-rolled, bars, wire, tubes)
• Chapter 73: Articles of iron or steel (screws, bolts, pipes, structures)
• Chapter 76: Aluminum and articles thereof
• Select headings in other chapters: certain products containing steel/aluminum as primary material

Country Exemptions

Some countries have negotiated exemptions or alternative arrangements. As of 2026, the landscape has evolved significantly from the original 2018 proclamation. Check current executive orders and proclamations for the latest country-specific status, as these change frequently with trade negotiations.

Exclusion Process

Importers can request exclusions for specific products through the Commerce Department's BIS (Bureau of Industry and Security). The process involves demonstrating that the product is not available domestically in sufficient quantity or quality. Exclusions, if granted, are retroactive and allow refunds of Section 232 duties paid.

Why Correct HTS Classification Matters

Section 232 liability is determined by HTS classification. A product classified in Chapter 73 (articles of steel) is subject to 25% additional duty. The same product, if correctly classified in a different chapter (e.g., Chapter 84 for machinery), may not be. Misclassification can mean overpaying by 25% — or underpaying and facing CBP penalties.

Camtom TariffPro classifies products under HTSUS with 95% accuracy and flags Section 232/301 exposure automatically. Every classification includes the regular duty rate PLUS any additional tariff exposure.