Boron Carbide Abrasive Grit
Boron carbide (B4C) grit used in high-performance abrasives and armor materials. Classified in 2849.90.50.00 as 'other' chemically defined carbides, excluding metal-sintered cermets. Ideal for nozzle linings and cutting tools due to extreme hardness.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If shaped into wheels or segments
Abrasive wheels/discs of agglomerated carbides classified under heading 6805.
If tungsten carbide in complex salts form
Complex metal carbides may fall under Chapter 28 salts if chemically defined differently.
If for semiconductor polishing slurries
Carbide powders in prepared chemical mixtures for electronics classified in 3818.
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Import Tips & Compliance
• Include technical data sheets confirming >99% purity to meet 'chemically defined' criteria
• Declare as UN3077 environmentally hazardous if shipped in bulk quantities
• Check end-use declarations to prevent reclassification as defense articles under ITAR
Related Products under HTS 2849.90.50.00
Silicon Carbide Powder
High-purity silicon carbide (SiC) powder used in abrasives, refractories, and ceramics production. It falls under HTS 2849.90.50.00 as a chemically defined carbide, not silicon carbide in sintered form with metal (which would be cermets in Section XV). This subheading covers other carbides beyond specified exclusions like calcium carbide.
Tungsten Carbide Powder
Fine tungsten carbide (WC) powder for manufacturing cutting tools and wear-resistant coatings. Falls under HTS 2849.90.50.00 as other carbides, provided not sintered with metal into cermet form. Chemically defined compound per Chapter 28 notes.
Chromium Carbide Powder
Chromium carbide (Cr3C2) powder applied in thermal spray coatings for corrosion resistance. Classified under 2849.90.50.00 for chemically defined carbides excluding those sintered with metals. Used in aerospace and petrochemical industries.
Vanadium Carbide Powder
Vanadium carbide (VC) powder used as grain refiner in steel alloys and tool steels. HTS 2849.90.50.00 applies to this chemically defined carbide not chemically combined as complex salts. Enhances hardness without brittleness.
Molybdenum Carbide Catalyst
Molybdenum carbide (Mo2C) nanoparticles used as hydrotreating catalysts in refineries. Falls under 2849.90.50.00 as chemically defined carbide for chemical process applications. High stability under harsh reaction conditions.
Titanium Carbide Powder
Titanium carbide (TiC) powder for cermet production and wear-resistant parts. Classified in HTS 2849.90.50.00 when chemically pure, before sintering with metals. Offers high melting point for extreme environments.