2508.40.01.50/Calcined Kaolin Metakaolin/Japan

Calcined Kaolin Metakaolin from Japan

Partially calcined kaolin producing metakaolin for high-performance concrete Pozzolanic reaction. HTS 2508.40.0150 includes calcined 'other clays' unless specifically chamotte; metakaolin qualifies as processed clay.

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

• Provide calcination temperature records (<900°C) to differentiate from full mullite

• Test for pozzolanic activity but declare as clay product, not cement additive