Mullite Powder Refractory Castable from Japan
Synthetic mullite-based castable for glass furnace regenerators. HTS 3816.00.20.50 classification for alkali resistance to 1450°C. 3:2 alumina-silica ratio optimizes creep resistance.
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
• XRD analysis confirms mullite phase purity
• Creep rate data (<0.5% at temp) essential