Micaceous Fire-Clay
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mica splittings >50% content
Mica-dominant per statistical note (b) goes to 2525.
If with micaceous iron oxides
Natural micaceous iron oxides specified in 2530 note.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 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
Related Products under HTS 2508.30.00.00
Calcined Fire-Clay Powder
Calcined fire-clay is a high-alumina clay processed at high temperatures to enhance its heat resistance, used primarily in refractory brick manufacturing. It falls under HTS 2508.30.00.00 as fire-clay, a type of clay suitable for withstanding high temperatures without fusing. This product is essential for furnace linings and kilns.
Raw Fire-Clay Lumps
Raw fire-clay in lump form is unprocessed high-alumina clay mined for refractory applications like stove linings. Classified under HTS 2508.30.00.00 as fire-clay, distinct from expanded clays or other minerals. It provides the base material for firebricks and pottery kilns.
Fire-Clay Grogs
Fire-clay grogs are crushed and screened particles of fired clay used as aggregate in refractory mixes. They qualify under HTS 2508.30.00.00 as fire-clay (chamotte or dinas earths), valued for thermal stability in castables. Common in foundry and boiler applications.
High-Alumina Fire-Clay
High-alumina fire-clay contains over 40% Al2O3, ideal for severe thermal shock in steel plant refractories. It is classified in HTS 2508.30.00.00 as fire-clay, excluding expanded forms per chapter notes. Supplied in bulk for mixer plants.
Chamotte Fire-Clay
Chamotte is pre-fired fire-clay crushed into granules, used in refractory castables for improved strength. Falls under HTS 2508.30.00.00 as dinas earths or chamotte, a semi-processed clay product. Key for glass furnace repairs.
Dinas Fire-Clay Earth
Dinas earths are siliceous fire-clays used in high-temperature silica bricks for coke ovens. Classified under HTS 2508.30.00.00 as fire-clay variants like chamotte or dinas. Known for low flux content and purity.