Cold-Finished 4340 Alloy Steel Hexagonal Bar from Mexico
High-strength 4340 nickel-chromium-molybdenum alloy steel bar in hexagonal profile, cold-finished for shafts and pinions. Classified under HTS 7228.50.50 as other cold-formed/cold-finished bars of alloy steel. Not further worked beyond cold-finishing per chapter definition.
Duty Rate — Mexico → United States
50%
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
9903.05.900%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
• Label with exact alloy grade and dimensions; CBP may require verification against ASTM A29 specs
• Avoid misclassification as tool steel (7228.70) by confirming it doesn't meet chapter note (e) element thresholds
• Include heat treatment records if normalized, as quenching doesn't count as 'further worked' but affects end-use docs