High-Alumina Refractory Firebrick from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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