Ultra-Fine Boron Carbide Nanopowder <500nm from Japan
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.
Duty Rate — Japan → United States
13.7%
Rate breakdown
9903.03.0110%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
Import Tips
• Include TEM/SEM analysis confirming particle size distribution for nanomaterial classification
• Declare surface area (BET method) as >10 m²/g distinguishes from conventional powders
• Special handling for inhalation hazards; require NIOSH-approved respirators