AISI 4340 Aircraft Steel Rectangular Billet
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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If razor blade steel per note (d)
Thin stainless strip for blades has separate thin-gauge classification
If forged rather than rolled/cast
Forged bars have separate classification from cast/rolled semi-finished
If angles/shapes rather than rectangular
Non-rectangular hot-rolled profiles classify under heading 7228
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• AMS specifications certification required; Ultrasonic testing reports for internal quality; Confirm minimum yield strength meets aircraft specs
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