Boron Carbide Powder B4C 99% Purity
High-purity boron carbide (B4C) powder used primarily as an abrasive in polishing and grinding applications. This chemically defined inorganic compound of boron falls under HTS 2849.90.10.00 as a carbide of boron, not further processed into finished articles.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If manufactured into abrasive grains or powder for grinding wheels
Processed into specific abrasive articles, shifting from pure chemical compound to finished millstones or grinding wheels.
If doped or chemically modified for electronic semiconductors
Doped chemical elements for electronics fall under heading 3818 when prepared as materials for semiconductor production.
If in sintered form as ceramic components
Sintered metal carbides or cermets are classified separately from pure chemical carbides.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide Certificate of Analysis (COA) confirming boron carbide composition and purity to avoid misclassification as mixtures
• Declare particle size and intended use (e.g
• abrasive) as boron carbide can be reclassified if processed for nuclear applications
• Check REACH/ TSCA compliance for industrial chemicals; boron carbide may require prior notice for bulk shipments
Related Products under HTS 2849.90.10.00
Amorphous Boron Carbide Granules 10-50 Micron
Granular amorphous boron carbide (B4C) used in metallurgical additives and ceramic raw materials. Classified under HTS 2849.90.10.00 as chemically defined boron carbide in granular form, excluding finished products.
High-Purity Boron Carbide for Nuclear Applications
Ultra-high purity boron carbide specifically for neutron absorption in nuclear reactors. Falls under HTS 2849.90.10.00 as chemically defined boron carbide compound, distinguished by isotopic purity.
Boron Carbide Abrasive Micro-Powder F220
F220 grit boron carbide micro-powder standardized for precision lapping and polishing of semiconductors and optics. Classified as chemically defined boron carbide under HTS 2849.90.10.00 before final abrasive article assembly.
Reaction-Bonded Boron Carbide Precursor Powder
Specialty boron carbide powder designed for reaction-bonded ceramic processing in armor and wear-resistant applications. Remains under HTS 2849.90.10.00 as pure chemical compound prior to sintering.
Boron Carbide Sputtering Target Material
High-density boron carbide material prepared for thin-film deposition via sputtering in semiconductor manufacturing. Classified under HTS 2849.90.10.00 as chemically defined boron carbide in raw target form.
Ultra-Fine Boron Carbide Nanopowder <500nm
Nanoscale boron carbide powder with average particle size <500nm for advanced composites and coatings. Meets HTS 2849.90.10.00 criteria as chemically defined boron carbide nanomaterial.