High-Alumina Chamotte Powder from Mexico
High-alumina chamotte powder, typically 50-70% Al2O3, is produced by calcining fireclay for addition to monolithic refractories and castables. It is classified in HTS 2508.70.00.00 as chamotte earth in powdered form, distinct from raw clays or finished articles. This ensures accurate duty application for bulk refractory raw materials.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include alumina content certification (e.g
• 60% Al2O3) for customs verification; avoid packaging suggesting retail to stay in raw material heading; test for calcination degree to rule out 2507 raw clays