Cold-Finished 4340 Alloy Steel Hexagonal Bar
High-strength 4340 nickel-chromium-molybdenum steel hexagonal bar, cold-finished to 40 mm across flats, for aerospace fasteners. Falls under HTS 7228.50.5015 as cold-finished alloy steel bars with cross-section under 76 mm, not further worked beyond cold-finishing. Alloy status from Ni-Cr-Mo elements exceeding Chapter 72 thresholds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If tool steel composition
Specific tool steel alloys (per note e) classified in 7228.70 regardless of form.
If ground or machined surface finish
Machining constitutes 'further worked' per Chapter 72 definition.
If made into tubes/pipes
Hollow sections shift to Chapter 73 tubes and pipes headings.
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Import Tips & Compliance
• Submit chemical analysis report proving Ni-Cr-Mo content meets alloy steel definition
• Document cold-finishing process (drawing/turning) to distinguish from hot-rolled products
• Check for minimum yield strength if high-strength steel note applies, affecting potential reclassification
Related Products under HTS 7228.50.50.15
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A 4140 chromium-molybdenum alloy steel bar, cold-formed with a diameter of 25 mm, used in mechanical engineering for shafts and gears. Classified under HTS 7228.50.5015 as other bars and rods of alloy steel, not further worked than cold-formed or cold-finished, with cross-section less than 76 mm. Meets alloy steel definition due to chromium and molybdenum content.
Cold-Drawn 8620 Alloy Steel Square Bar
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Cold-Drawn E4340 Alloy Steel Rod
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Cold-Formed 9310 Alloy Steel Bar
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