High-Alumina Refractory Firebrick from Japan
High-alumina refractory firebrick containing over 50% alumina (Al2O3), fired after shaping for high-temperature resistance. Used in furnaces and kilns for lining to withstand extreme heat without deforming. Classifies under 6902.20.10 as refractory bricks with predominant alumina content.
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 chemical composition certificate showing >50% Al2O3 or SiO2 to confirm refractory classification
• Ensure bricks were fired after shaping at ≥800°C; provide firing process documentation
• Avoid misclassification as building bricks (6904); highlight high-temperature end-use