Synthetic Mullite Powder from Japan
Synthetic mullite powder is a high-alumina ceramic material produced by sintering or fusing alumina and silica, used primarily in refractory applications. It falls under HTS 2508.60.00.00 as mullite, a specific aluminosilicate mineral classified among other clays and earths, whether or not calcined.
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 purity and chemical composition via lab certification to confirm mullite classification and avoid reclassification as synthetic corundum