Calcined Andalusite 55% Al2O3 from Germany
Calcined andalusite with 55% alumina content is heat-treated to convert partially to mullite, improving thermal shock resistance. HTS 2508.50.00.00 covers this calcined form before further processing into finished refractories.
Duty Rate — Germany → 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
• Alumina content certificates mandatory; discrepancies lead to 2529 reclassification
• Declare calcination temperature (typically 1300-1500°C) to confirm processing level
• Bulk bag labeling must specify 'not for expanded clay production' per statistical notes