AISI 4140 Alloy Steel Flat Bar from China
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 — China → United States
75%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 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
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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