Boron Carbide Abrasive Grit from Mexico
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.
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 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