US Steel and Aluminum Tariffs: Latest Section 232 Update

The landscape of international trade is facing a significant shift as the Trump administration moves to overhaul the existing steel and aluminum tariff regime. This presidential proclamation aims to restructure how duties are applied to metal imports, potentially reshaping cross-border manufacturing and global freight flows for years to come. For businesses involved in the metal trade, understanding these changes is critical for maintaining supply chain stability and cost-efficiency.

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• Commodity Tariffs: A 50% tariff will remain on commodity steel and aluminum imports from major trade partners, including Canada and Mexico.
• Derivative Products: Duties on derivative goods made from these metals may be reduced to a range of 15% to 25%.
• Calculation Change: Tariffs will now be applied to the full value of imported derivative goods rather than just the metal content.
• Revenue Impact: The overhaul is estimated to generate approximately $70 billion in federal revenue through fiscal year 2036.
• Major Origins: Top affected exporters include Canada ($27.2B), China ($18.5B), Mexico ($15.7B), and South Korea ($7.66B).

Understanding the Section 232 Tariff Overhaul

The proposed changes to Section 232 tariffs represent a strategic pivot in how the United States manages metal imports. While the 50% duty on raw commodity steel and aluminum remains a cornerstone of the policy, the administration is introducing more nuanced layers for derivative products. These products, which range from tractor parts to stainless steel sinks and gas ranges, will see a revised duty structure that could fluctuate between 15% and 25% depending on the specific product category.

This policy shift is not merely about the percentage of the duty but also about the scope of the products covered. By extending the reach of these tariffs to thousands of derivative items, the administration is targeting a broader segment of the manufacturing supply chain. For procurement teams, this means that even finished goods that were previously less affected by metal price volatility may now face significant import cost increases.

The Shift to Full-Value Duty Calculation

Perhaps the most operationally significant change in this overhaul is the method used to calculate duties. Previously, tariffs were often focused on the specific steel or aluminum content within a product. The new directive applies the duty to the full value of the imported derivative goods. While intended to simplify customs compliance, this move effectively increases the total cost for many imported products, as labor, overhead, and other non-metal components are now included in the taxable base.

This change has profound implications for integrated supply chains, particularly those involving North American partners. In many cases, raw metals are melted in the U.S., sent to Mexico for processing, and then returned to the U.S. as finished components. Under the new rules, these goods could face tariffs on their full value upon re-entry, even if the original metal was sourced domestically. As a company specializing in international freight forwarding, M.T.L Worldwide Transport closely monitors these regulatory shifts to help our clients navigate the complexities of landed cost calculations in this new environment.

Impact on Asian Trade Partners: China and South Korea

While much of the focus remains on North American cross-border trade, the impact on Asian exporters is substantial. In 2025, China was the second-largest origin for metal imports to the U.S., valued at $18.5 billion, while South Korea contributed $7.66 billion. These nations are critical suppliers of both commodity metals and the derivative products now facing the 15% to 25% duty range.

For shippers moving cargo from these regions, the combination of high commodity tariffs and the expanded scope of derivative duties requires a thorough reassessment of carrier selection and routing. The shift in calculation to the “full value” of goods means that high-value manufactured items from Asia will see a disproportionate increase in total duty paid compared to previous years. Logistics managers must factor these costs into their 2025 and 2026 budgets to avoid unexpected margin erosion.

Strategic Implications for Supply Chain Managers

The overhaul of the tariff regime necessitates a proactive approach to supply chain planning. With the U.S. importing roughly 13% of its steel and 60% of its aluminum consumption, the reliance on international sources remains high despite the increased costs. Total metal imports, including iron, steel, aluminum, and copper, reached approximately $154.9 billion last year, highlighting the massive scale of the trade lanes affected by these changes.

Decision-makers should prioritize a review of their Harmonized Tariff Schedule (HTS) classifications for all derivative metal products. Ensuring that goods are correctly categorized will be essential for navigating the 15% to 25% duty range and avoiding compliance penalties. Furthermore, as the administration seeks to offset revenue losses through these tariffs, importers should prepare for a period of heightened enforcement and scrutiny at ports of entry.

Ultimately, the move toward reshoring and the rewriting of freight demand will continue to influence how goods move across the globe. By staying informed of these policy shifts, trade managers can better position their organizations to adapt to the evolving requirements of the U.S. market.