2508.70.00.00/Fireclay Chamotte Aggregates 70% Al2O3/Japan

Fireclay Chamotte Aggregates 70% Al2O3 from Japan

Fireclay-based chamotte aggregates with 70% alumina content serve as coarse fractions in refractory concrete for kilns and incinerators. Under HTS 2508.70.00.00 as chamotte or dinas earths, these are calcined clays not expanded or otherwise manufactured beyond aggregation. They enhance volume stability in high-heat environments.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Declare aggregate size distribution (e.g

• 3-6mm) in entry docs; ensure no binders added to avoid chemical preparation headings; use ISIRI or ASTM refractory standards for quality proof