AISI 4140 Alloy Steel Round Billet from China
A round semi-finished billet made from AISI 4140 chromium-molybdenum alloy steel, with circular cross section, used primarily for forging into shafts and gears. Classified under HTS 7224.90.0065 as other alloy steel semi-finished products of circular cross section in primary forms. Meets alloy steel definition due to chromium and molybdenum content exceeding specified thresholds.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%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
9903.91.0125%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
Import Tips
• Provide mill test certificates verifying alloy composition (Cr, Mo content) to confirm classification as alloy steel
• Ensure product dimensions confirm circular cross section under 230 mm diameter to avoid reclassification
• Declare exact carbon equivalent and heat analysis to prevent disputes over 'other alloy steel' status