Boron Carbide Abrasive Micro-Powder F220 from China
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.
Duty Rate — China → United States
38.7%
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Include FEPA or ANSI grit size certification to distinguish from industrial mixtures
• Declare as 'not for consumer use' to avoid retail packaging classifications
• Monitor particle size distribution; ultrafine powders (<1 micron) may require respiratory protection declarations