Micaceous Fire-Clay from Mexico
Micaceous fire-clay blends clay with natural mica flakes for enhanced thermal insulation in refractories. Classified in HTS 2508.30.00.00 as fire-clay, not split block mica. Applied in lightweight kiln furniture.
Duty Rate — Mexico → 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
• Quantify mica <20% to stay in clay heading; higher shifts risk
• Distinguish from 2525 mica splittings via thickness tolerances
• Use XRF analysis reports for composition transparency