Tungsten Carbide Catalyst Powder from Mexico
Fine tungsten carbide powder serves as a heterogeneous catalyst in Fischer-Tropsch synthesis and hydrocracking processes. Classified under HTS 3815.90.1000 as it consists wholly of inorganic tungsten compounds designed for reaction acceleration. Its high surface area enhances catalytic efficiency in petrochemical applications.
Duty Rate — Mexico → United States
16.5%
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
• Submit particle size analysis and BET surface area reports to confirm catalytic-grade specifications
• Include manufacturer specs showing use in reaction initiation, avoiding classification as mere metal powder
• Check for tungsten content purity; impurities may trigger reclassification under 2849