AISI 4140 Hot-Rolled Alloy Steel Round Bar
AISI 4140 is a chromium-molybdenum alloy steel round bar produced by hot-rolling, used for shafts, gears, and axles in machinery. It falls under HTS 7228.30.80 as other bars and rods of alloy steel, not further worked than hot-rolled, hot-drawn or extruded. The alloy composition exceeds simple carbon steel definitions and lacks special alloy steel specifications from chapter notes.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-formed or finished
Cold-rolled or otherwise finished bars move to 7228.70, as they exceed 'not further worked than hot-rolled' limitation.
If not qualifying as alloy steel
Bars with insufficient alloying elements (e.g., <0.3% Cr) fall under non-alloy steel hot-rolled bars in heading 7214.
If tool steel per note (e)
Tool steels with specific high carbon/chromium compositions are classified separately under 7228.30.20.
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Import Tips & Compliance
• Provide mill test certificates confirming alloy composition (e.g
• Cr 0.8-1.1%, Mo 0.15-0.25%) to verify classification as alloy steel
• Ensure documentation specifies 'not further worked than hot-rolled' to avoid reclassification under cold-worked headings like 7228.50
• Check for high-strength steel note (a) compliance; if yield strength exceeds thresholds, alternative classification may apply
Related Products under HTS 7228.30.80
17-4 PH Stainless Alloy Steel Hot-Rolled Flat Bar
17-4 PH precipitation-hardening stainless steel flat bar, hot-rolled for aerospace and structural applications requiring high strength and corrosion resistance. Classified under HTS 7228.30.80 as other alloy steel bars not further worked than hot-rolled. Its martensitic structure and alloy content distinguish it from basic carbon steels.
AISI 4340 Hot-Extruded Alloy Steel Hexagonal Rod
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EN24 Alloy Steel Hot-Drawn Square Bar
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AISI 8620 Hot-Rolled Alloy Steel Round Rod
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