Heat-resisting steel
Flat-rolled products of other alloy steel, of a width of 600 mm or more: > Other, not further worked than cold-rolled (cold-reduced): > Other: > Of a thickness of less than 4.75 mm: > Heat-resisting steel
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Products classified under HTS 7225.50.70.00
304H Stainless Heat-Resisting Steel Cold-Reduced Plate
Cold-rolled 304H stainless steel plate under 4.75 mm thick and 600+ mm wide, qualifying as heat-resisting per US note (g) due to low carbon and chromium content. Designed for elevated-temperature service in petrochemical processing equipment. Not further worked beyond cold-reduction.
310S Cold-Rolled Heat-Resisting Alloy Steel Sheet
Cold-reduced 310S alloy steel sheet, thickness less than 4.75 mm, width exceeding 600 mm, heat-resisting per US note (g). High chromium content provides oxidation resistance up to 1100°C for furnace linings and heat treatment baskets. Supplied in annealed condition without additional surface treatments.
253MA Heat-Resistant Cold-Rolled Steel Sheet
Cold-rolled 253MA austenitic steel sheet under 4.75 mm thick, over 600 mm wide, qualifying as heat-resisting steel. Rare earth stabilized for superior high-temperature strength in burner parts and kiln furniture. Not clad, coated, or otherwise further worked.
AL-6XN Cold-Reduced Heat-Resisting Steel Plate
Cold-rolled AL-6XN super-austenitic steel plate, thickness <4.75 mm, width ≥600 mm, heat-resisting per definition. Enhanced molybdenum for corrosion resistance in chemical processing at elevated temperatures. Delivered in pickled and annealed condition only.
Incoloy 800 Cold-Rolled Heat-Resisting Steel Sheet
Flat-rolled Incoloy 800 alloy steel sheet, cold-rolled to a thickness under 4.75 mm and width over 600 mm, not further worked. Meets U.S. note (g) definition for heat-resisting steel with low carbon (<0.3%) and 4-10.5% chromium for high-temperature oxidation resistance. Used in furnace components and heat exchangers.