AISI 4340 Aircraft Steel Rectangular Billet from Mexico
Ni-Cr-Mo 4340 alloy steel rectangular billet for landing gear/structural aircraft parts, cross-section width <4x thickness. Precisely matches HTS 7224.90.0045 for alloy steel semi-finished rectangular products. High-strength requirements demand exact alloy composition.
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
• AMS specifications certification required; Ultrasonic testing reports for internal quality; Confirm minimum yield strength meets aircraft specs