US tariffs on aluminum, steel, copper adjusted effective June 2026
The U.S. Federal Register published a notice on June 4, 2026, announcing further adjustments to tariff rates on imports of aluminum, steel, and copper. The adjustment affects HS chapters 72 (iron and steel), 73 (articles of iron or steel), 76 (aluminum and articles thereof), and 74 (copper and articles thereof). Shippers importing these commodities must verify updated duty rates and adjust landed-cost calculations accordingly before the effective date.
Photo: Nic Wood / PexelsU.S. Tariff Adjustments on Aluminum, Steel, and Copper
On June 4, 2026, the U.S. Federal Register published a notice adjusting the tariff regimes governing imports of aluminum, steel, and copper into the United States. This is a material change to duty rates that affects a broad base of industrial importers and commodity shippers.
Who Is Affected
Importers of the following commodities face immediate duty-rate changes:
- Iron and steel products (HS Chapter 72 and HS Chapter 73): flat-rolled steel, tubes, fasteners, and structural shapes
- Aluminum and articles (HS Chapter 76): ingots, plate, foil, extrusions, and manufactured goods
- Copper and articles (HS Chapter 74): unwrought copper, copper wire, and copper alloys
Freight forwarders, e-commerce merchants sourcing these materials from global suppliers, and SMB exporters reliant on competitively priced raw materials or components must immediately recalculate landed costs and review supplier contracts that reference fixed-tariff assumptions.
What Changed
The Federal Register notice confirms that the U.S. has further adjusted its tariff regimes for these three commodity families. The specific new rates, effective dates, and any carve-outs or quotas are defined in the full notice text available at the Federal Register URL.
Further details on the scope, rates, and implementation timeline are published in the official Federal Register document.
Shippers must consult the full text to determine whether their specific HS codes, country of origin, or product classification fall under the new regime.
What this means for shippers
Immediately verify the exact HS chapter codes and origin countries for any aluminum, steel, or copper shipments in your pipeline. Recalculate landed costs using the updated duty rates from the Federal Register. If you have open purchase orders or forward commitments priced before June 4, 2026, you may face margin compression or need to renegotiate terms. Use our tariff lookup tool to confirm duties and model cost impact by shipment and country of origin.
