Other
Other alloy steel in ingots or other primary forms; semi-finished products of other alloy steel: > Other
Duty Rate (from China)
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
Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Subheadings
Products classified under HTS 7224.90.00
AISI 8630 Low Alloy Billet
AISI 8630 Ni-Cr-Mo low-alloy steel billets for weldable structures and pipes. Classified in 7224.90.00 semi-finished other alloy steel.
AISI 4140 Alloy Steel Round Billet
AISI 4140 is a chromium-molybdenum alloy steel billet used for forging shafts and gears, supplied in semi-finished round form with diameters typically 100-300mm. It falls under HTS 7224.90.00 as a semi-finished product of other alloy steel (not stainless), distinct from stainless in chapter 7221 or high-strength/specialty steels defined in notes. These primary forms require further hot working like rolling or forging.
AISI 4340 Chromium-Molybdenum Steel Slab
AISI 4340 alloy steel slabs for aerospace forgings and high-stress components, typically 200-400mm thick in rectangular form. Classified in 7224.90.00 as semi-finished other alloy steel, not meeting tool steel or high-strength definitions in U.S. notes, intended for hot rolling into plates.
EN24 Alloy Steel Bloom
EN24 (817M40) nickel-chromium-molybdenum alloy steel bloom, square cross-section over 150mm, used for heavy-duty gears and axles. HTS 7224.90.00 covers this semi-finished other alloy steel, excluding stainless, tool, or ball-bearing steels per chapter notes.
AISI 8620 Case-Hardening Steel Billet
Low-alloy AISI 8620 carburizing steel billets for gears and pinions, Ni-Cr-Mo composition. Fits 7224.90.00 as semi-finished other alloy steel, not further worked and excluding specialty types like razor blade or chipper knife steel.
AISI 4130 Seamless Pipe Billet
Chromoly AISI 4130 steel billets specifically for piercing into seamless tubing used in aircraft and oilfield applications. Under 7224.90.00 as other semi-finished alloy steel products, primary form before extrusion.
SCM440 Japanese Alloy Steel Bloom
JIS SCM440 (similar to 4140) alloy steel bloom for machine structural use, Cr-Mo composition. HTS 7224.90.00 for semi-finished other alloy, not heat-resisting or universal mill plate per notes.
AISI 9310 Aircraft Gear Steel Billet
High-performance AISI 9310 Ni-Cr-Mo alloy steel billets for nitrided aircraft gears and bearings. Classified 7224.90.00 as semi-finished other alloy steel, excluding ball-bearing steel note (h) compositions.
HY-80 Submarine Hull Steel Slab
HY-80 high-yield alloy steel slabs for naval submarine hull plates, Ni-Cr-Mo-V composition. 7224.90.00 as other semi-finished alloy steel, not universal mill plate (width 150-1250mm, per note b).
AISI 52100 Bearing Steel Bloom
AISI 52100 high-carbon Cr alloy steel blooms for roller bearings, close to but not exactly ball-bearing steel note (h). HTS 7224.90.00 for semi-finished other alloy, prior to further processing.
15CrMoG Boiler Tube Billet
15CrMoG low-alloy steel billets for high-pressure boiler tubes, Chinese standard Cr-Mo grade. Fits 7224.90.00 semi-finished other alloy steel, not razor blade or heat-resisting per notes.
34CrNiMo6 Gear Steel Billet
EN 34CrNiMo6 alloy steel billets for large gears and crankshafts, Ni-Cr-Mo case-hardening grade. 7224.90.00 as other semi-finished alloy steel product.
AISI 316 Modified Alloy Billet
Modified AISI 316 low-carbon alloy steel billets (under 10.5% Cr), for pressure vessels. Under 7224.90.00 as other alloy (non-stainless), differentiated by chromium content.
SAE 4150 Oilfield Drill Billet
SAE 4150 Cr-Mo alloy steel billets for oil drilling tools and stems. HTS 7224.90.00 semi-finished other alloy steel.
1.6582 (18NiCrMo5) Alloy Steel Bloom
DIN 1.6582 case-hardening alloy steel blooms for automotive transmissions. 7224.90.00 as semi-finished other alloy.