Alumina Crucible from Japan
High-purity alumina ceramic crucible used for melting and holding metals or chemicals at high temperatures in laboratories and foundries. Classified under HTS 6903.90.00 as a refractory ceramic good designed to withstand extreme heat without deforming, distinct from building materials in 6901-6902. Fired after shaping from inorganic nonmetallic materials like alumina oxide.
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 material composition certification showing >99% alumina to confirm refractory status; ensure firing temperature documentation exceeds 800°C per Chapter 69 notes
• Common pitfall: misclassification as lab glassware under Chapter 70 if not certified fired ceramic