Ultra-Fine Boron Carbide Nanopowder <500nm from Mexico
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 — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 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