Calcined Chamotte Refractory Clay from Canada
Calcined chamotte is a high-alumina fired clay aggregate used primarily in refractory brick manufacturing for high-temperature applications like furnace linings. It falls under HTS 2508.70.00.00 as chamotte earth, which is specifically defined as a type of dinas earth processed through calcination to achieve thermal stability. This material is not expanded and remains in granular or powdered form suitable for refractory production.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Verify calcination process documentation to distinguish from raw clays; ensure particle size specs match chamotte standards to avoid reclassification; obtain supplier certificates confirming suitability only for refractory use, not expanded forms