AISI 4140 Alloy Steel Flat Bar from Mexico
Semi-finished AISI 4140 chromium-molybdenum alloy steel flat bar with rectangular cross section where width is at least four times the thickness, in primary form suitable for further processing. Classified under HTS 7224.90.0055 as other alloy steel semi-finished products (not tool steel or stainless) with specified dimensions. Excludes high-strength, universal mill, or other specially defined steels.
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
• Certify exact alloy composition excluding tool steel definitions (e.g
• >1.2% C + >10.5% Cr) to avoid reclassification
• Avoid rust/discoloration claims as no duty allowance per Chapter 72 note