Fire Clay Powder from Mexico
Refractory-grade fire clay ground into powder for brick manufacturing and high-temperature applications. Classified in HTS 2508.40.01 as other clays, provided not calcined into mullite or chamotte.
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 and silica content analysis to confirm refractory clay status under other clays
• Document as 'not calcined' to avoid 2508.50-2508.70 subheadings for andalusite, kyanite, or chamotte
• Avoid pitfall of importing pre-mixed with binders, which may classify as mixtures under 3816