Tungsten Silicate Binder for Foundry Molds from Japan
A mixture of sodium silicate and tungsten compounds used as a binder in foundry mold production. It provides high-temperature resistance and strength for sand cores in metal casting. Classified under 3824.99.3500 as a mixture of two or more inorganic compounds containing tungsten, specifically for foundry applications.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify exact tungsten content and inorganic composition via lab analysis to confirm 3824.99.3500 classification
• Include Safety Data Sheets (SDS) and foundry end-use documentation to avoid misclassification as general chemicals
• Watch for EPA restrictions on tungsten compounds; ensure TSCA compliance for US entry