AISI 4140 Alloy Steel Round Billet from Mexico
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 — Mexico → United States
10%
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
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