AISI 4340 Nickel-Chromium-Moly Steel Round Bloom
AISI 4340 high tensile strength alloy steel round bloom with circular cross section for aircraft landing gear. Classified HTS 7224.90.0065 as other alloy (Ni-Cr-Mo) steel in primary forms. Widely used structural alloy meeting multiple Chapter 72 alloy definitions.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If hot-rolled into bars of circular cross section
Completion state advances from primary to hot-rolled bar products.
If universal mill plate dimensions and process
Note (b) defines specific rolling process and dimensions for separate category.
If angles, shapes, sections after rolling
Profile shapes created post-primary forming shift to worked steel headings.
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Import Tips & Compliance
• AMS 6414 aerospace spec certification strengthens alloy steel classification claim
• Measure exact diameter; over 150 mm may trigger universal mill plate scrutiny
• Prevent reclassification by proving no box pass rolling occurred during production
Related Products under HTS 7224.90.00.65
AISI 4140 Alloy Steel Round Billet
A round semi-finished billet made from AISI 4140 chromium-molybdenum alloy steel, with circular cross section, used primarily for forging into shafts and gears. Classified under HTS 7224.90.0065 as other alloy steel semi-finished products of circular cross section in primary forms. Meets alloy steel definition due to chromium and molybdenum content exceeding specified thresholds.
EN19 Alloy Steel Round Bloom
EN19 grade alloy steel round bloom with circular cross section, semi-finished product for hot rolling into bars or tubes. Falls under HTS 7224.90.0065 as other alloy steel in primary forms due to manganese and chromium alloying elements. Typically used in manufacturing axles and crankshafts.
42CrMo4 Alloy Steel Round Semi-Finished Billet
42CrMo4 grade alloy steel billet with precise circular cross section, in semi-finished form for machining into mechanical components. HTS 7224.90.0065 applies to other alloy steel primary products distinguished by circular shape. Contains Cr 0.9-1.2% and Mo 0.15-0.3% qualifying as alloy per Chapter notes.
15NiCrMo16-4 Alloy Steel Round Ingot
15NiCrMo16-4 carburizing alloy steel round ingot with circular cross section, primary form for gear manufacturing. HTS 7224.90.0065 covers other nickel-chromium-moly alloy steels in this form. Ni-Cr-Mo composition exceeds carbon steel alloy limits per US note definitions.
34CrNiMo6 Alloy Steel Semi-Finished Round
34CrNiMo6 high-strength alloy steel semi-finished round of circular cross section for heavy-duty shafts. Classified under HTS 7224.90.0065 as other alloy steel primary products. Multi-element alloying (Cr, Ni, Mo) distinguishes from plain carbon steels.
SCM440 Alloy Steel Circular Bloom
SCM440 Japanese standard alloy steel bloom featuring circular cross section, primary form for forging automotive parts. Classified HTS 7224.90.0065 as other alloy (Cr-Mo series) semi-finished product. Excludes stainless and tool steel categories per Chapter 72 note specifications.