AISI 4340 Alloy Steel Powder
Fine powder made from AISI 4340 nickel-chromium-molybdenum alloy steel, used in additive manufacturing and metal injection molding. Classified under HTS 7205.21.00.00 as it consists of granules and powders of alloy steel, meeting the chapter's definition for steel alloys with specified elements. Particle size typically ranges from 15-45 microns for optimal sintering.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If composition does not meet alloy steel definitions
Powders lacking specified alloying elements in US Chapter 72 notes classify as iron or non-alloy steel powders.
If chemically treated or mixed with binders for specific applications
Further processing like chemical treatments or additives may shift classification to prepared binders or chemical products outside Chapter 72.
If imported as ready-to-use feedstock for specific industrial machines
If pre-processed for exclusive use in additive manufacturing equipment, it may classify as parts of those machines rather than base steel powder.
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Import Tips & Compliance
• Provide mill test certificates confirming alloy composition per US note (e.g
• chromium, molybdenum content); ensure particle size distribution documentation to avoid misclassification as granules; declare exact alloy type to prevent reclassification as non-alloy steel
Related Products under HTS 7205.21.00.00
Heat-Resisting Steel Powder
Alloy steel powder per US note (g): <0.3% C, 4-10.5% Cr for furnace components and heat exchangers. HTS 7205.21.00.00 as defined alloy steel. Vacuum-atomized, 50-200 micron.
17-4 PH Stainless Steel Powder
Precipitation-hardening stainless steel powder (17% chromium, 4% nickel) used for aerospace components via selective laser melting. Falls under HTS 7205.21.00.00 as alloy steel powder per chapter definitions for chromium-containing steels. Typically spherical particles of 15-53 micron size.
Tool Steel H13 Powder
H13 hot-work tool steel powder (chromium-molybdenum alloy) for die casting and forging tooling via powder metallurgy. HTS 7205.21.00.00 applies as it meets tool steel definition in US note (e) with >1.2% carbon and >10.5% chromium equivalent composition. Gas-atomized for uniform 20-100 micron particles.
Inconel 718 Alloy Steel Powder
Nickel-chromium superalloy powder (Inconel 718) used in turbine blades and high-temperature aerospace parts. Classified HTS 7205.21.00.00 as alloy steel powder despite high nickel, based on iron-base composition meeting chapter alloy criteria. Fine spherical powder, 15-45 microns.
Maraging Steel Grade 250 Powder
Maraging steel C250 powder (18% nickel, cobalt, molybdenum alloy) for rocket motor cases and precision tooling. HTS 7205.21.00.00 as alloy steel powder with ultra-high strength after aging heat treatment. Atomized to 20-60 micron size.
D2 Tool Steel Powder
D2 high-carbon high-chromium tool steel powder for cold-work dies and shear blades via PM-HIP process. Meets HTS 7205.21.00.00 and US note (e)(i) tool steel definition (>1.2% C, >10.5% Cr). Typical size -100/+325 mesh.