High-Alumina Chamotte Powder from China
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 — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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