2508.30.00.00/Plastic Fire-Clay Mass/Japan

Plastic Fire-Clay Mass from Japan

Plastic fire-clay mass is wet-mixed fire-clay for ramming into furnace shapes before firing. It is under HTS 2508.30.00.00 as unprocessed fire-clay, suitable for on-site refractory work. Used in steel ladles and incinerators.

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

• Specify water content <25% to remain as clay, not paste/slurry

• Ship in sealed drums to maintain plasticity and avoid drying claims

• Label 'for refractory use only' to prevent end-use misclassification