Boron Carbide Powder B4C 99% Purity from Mexico
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.
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
• 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