US Tightens Tariffs on Steel, Aluminium and Copper Imports

On 2 April 2026, the US issued a proclamation strengthening Section 232 tariffs on imports of steel, aluminium and copper, citing national security concerns.

Key Points:

• Tariffs now apply to the full customs value of covered products, not just metal content.
• New tiered rates introduced:
• 50% on products made almost entirely of steel, aluminium or copper
• 25% on most metal‑intensive derivative products
• Some lower transitional rates apply to certain industrial equipment until end‑2027
• Products containing 15% or less metal are removed from scope.
• Goods made abroad using US‑origin metals may qualify for a reduced 10% rate.

Impact for UK Exporters:

UK businesses exporting metal‑containing goods to the US should review product classifications carefully, as the changes could significantly increase landed costs for affected products. The new rules apply to imports from 6 April 2026.