U.S. President Donald Trump has signed a proclamation amending Section 232 tariffs on certain steel, aluminum and copper imports, introducing a series of adjustments that will affect a range of industrial and manufactured products, according to the White House.
The revised measures include a reduction in tariffs on several steel and aluminum derivative products. Certain categories of agricultural machinery, as well as residential heating, ventilation and air conditioning (HVAC) equipment, will now be subject to a 15% tariff rate, down from the previous 25%. The White House said the changes are intended to support domestic manufacturing while providing targeted tariff relief for specific products.
In addition, the proclamation establishes a 15% tariff on mobile industrial equipment, including bulldozers, forklifts and similar machinery, when imported from countries that qualify for preferential treatment under existing trade agreements with the United States. The adjustment modifies how these products are treated under the Section 232 framework and aligns tariff rates for qualifying imports.
The order also introduces provisions designed to encourage the use of domestically produced metals in manufacturing. Foreign companies may qualify for a reduced tariff rate of 10% if at least 85% of the steel or aluminum by weight used in their capital equipment is sourced from steel that has been melted and poured in the United States or aluminum that has been smelted and cast domestically. The measure aims to incentivize greater integration of U.S.-produced raw materials into industrial supply chains.
At the same time, the administration is expanding the scope of products subject to higher tariff rates. Two additional categories—steel racks and aluminum lithographic plates—have been added to the list of steel and aluminum derivative products facing a 25% duty. The White House said these additions are intended to ensure that tariff policies continue to cover a broader range of downstream products that utilize steel and aluminum inputs.
The updated tariff structure is scheduled to take effect for goods imported into the United States or withdrawn from bonded warehouses after 12:01 a.m. EST on June 8. Businesses involved in manufacturing, logistics, construction, agriculture and equipment supply chains are expected to assess the impact of the revised rates on sourcing strategies, production costs and trade flows.
According to the White House, the adjustments will remain in place through December 31, 2027. The administration stated that the measures are intended to encourage near-term investment, strengthen domestic production capabilities and support the long-term development of the U.S. industrial base. Industry stakeholders are expected to closely monitor the implementation of the revised tariff framework and its effects on manufacturing competitiveness, supply chain planning and international trade activity.
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