AISI 4340 Hot-Rolled Alloy Steel Shaft Blank
300 mm diameter hot-rolled bar of AISI 4340 nickel-chromium-molybdenum steel for aircraft landing gear. Falls under HTS 7228.30.80.70 as other hot-rolled alloy steel bars exceeding 228 mm cross-section, not further worked. Offers superior fatigue resistance for aerospace components.
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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 transfer to 7228.70 per Chapter 72 additional U.S. note (e).
If Semi-finished alloy products or those ≤228 mm go to other Chapter 72 headings.
If machined into finished bearing housing
Machined to final transmission shaft dimensions moves to Chapter 84 machinery parts.
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Import Tips & Compliance
• Include heat treatment records showing as-rolled condition, not normalized or quenched
• Document minimum alloy content (Ni, Cr, Mo) to confirm alloy steel per Chapter 72 note definitions
• Avoid shipments with mill scale removal that might constitute 'further worked' treatment
Related Products under HTS 7228.30.80.70
AISI 4140 Hot-Rolled Alloy Steel Round Bar
A 250 mm diameter round bar made from AISI 4140 chromium-molybdenum alloy steel, hot-rolled for structural applications. Classified under HTS 7228.30.80.70 as other alloy steel bars not further worked than hot-rolled, with diameter exceeding 228 mm. Used in heavy machinery shafts and axles due to its high strength and toughness.
HY-80 High-Yield Alloy Steel Forging Bar
12-inch (305 mm) square cross-section HY-80 alloy steel bar, hot-rolled for submarine hull forgings. HTS 7228.30.80.70 covers other alloy steel shapes/sections exceeding 228 mm, hot-rolled condition only. Meets high-strength steel specs for naval applications.
17-4 PH Stainless Alloy Steel Round Bar
10-inch (254 mm) diameter 17-4 PH precipitation hardening stainless steel bar, hot-rolled. Classifies in HTS 7228.30.80.70 as other alloy steel bars >228 mm, not further worked. Used for turbine shafts and pump components requiring corrosion resistance.
AISI 8620 Case-Hardening Alloy Steel Bar
280 mm hexagonal bar of AISI 8620 nickel-chromium-molybdenum steel, hot-extruded for gears. HTS 7228.30.80.70 for alloy steel shapes exceeding 228 mm cross-section, not further worked. Ideal for carburizing applications in heavy transmissions.
Modulus 4340M Low-Alloy Steel Billet
Square 11-inch (279 mm) Modulus 4340M alloy steel billet for oilfield forgings, hot-rolled. Under HTS 7228.30.80.70 as other alloy bars/sections >228 mm diameter equivalent. Enhanced modulus for deep oil/gas drilling applications.
Alloy Steel H-Beam Section 250x250 mm
250x250 mm H-beam profile of chromium-molybdenum alloy steel, hot-rolled for crane construction. HTS 7228.30.80.70 covers alloy steel shapes/sections exceeding 228 mm cross-section. Provides high strength-to-weight for heavy lifting equipment.