High-Alumina Fire-Clay from Mexico
High-alumina fire-clay contains over 40% Al2O3, ideal for severe thermal shock in steel plant refractories. It is classified in HTS 2508.30.00.00 as fire-clay, excluding expanded forms per chapter notes. Supplied in bulk for mixer plants.
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
• Submit chemical assays showing Al2O3 >30% to Customs for fire-clay verification
• Label as 'not expanded' explicitly to comply with exclusions in statistical notes
• Segregate from andalusite/kyanite shipments, as those have separate 2508 subheadings