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Alumina Crucible for Laboratory Use from Japan

High-purity alumina crucible designed for melting and holding metals or chemicals in laboratory furnaces, containing over 90% Al2O3 by weight. Fired after shaping at high temperatures exceeding 800°C, it qualifies as a refractory ceramic good under HTS 6903.20.00.00 due to its alumina content and use in high-temperature processes.

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%

Import Tips

Verify alumina content via chemical analysis certificate to confirm >50% Al2O3 for proper classification

Provide firing temperature documentation (>800°C) to distinguish from non-refractory ceramics excluded from Chapter 69

Avoid misclassification as lab glassware; specify refractory end-use in commercial invoice