4145 QT Alloy Steel Cold Bar 140 mm Round from Canada
4145 quenched-and-tempered alloy steel bar, cold-finished 140 mm diameter for drill collars and heavy shafts. HTS 7228.50.5040 applies to cold-formed alloy bars 76-228 mm, not further worked despite QT condition. Alloy via Cr-Mo content.
Duty Rate — Canada → 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
• QT heat treatment allowed if surface remains cold-finished only, not machined
• Certify 4145 chemistry distinctly from 4140 for proper alloy identification
• Oilfield applications may trigger special documentation requirements