High Alumina Refractory Bricks from Canada
High alumina refractory bricks, composed primarily of aluminum oxide, are fired ceramic products designed to withstand temperatures exceeding 1700°C. They are used in furnace linings and kilns for their superior thermal shock resistance and corrosion resistance. Classified under HTS 6902.90.10 as refractory bricks other than those made from siliceous fossil meals.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify chemical composition meets refractory standards (min. 45% alumina) with lab test certificates to avoid misclassification
• Ensure documentation proves firing temperature above 800°C as per Chapter 69 notes