Dinas Fire-Clay Earth from Japan
Dinas earths are siliceous fire-clays used in high-temperature silica bricks for coke ovens. Classified under HTS 2508.30.00.00 as fire-clay variants like chamotte or dinas. Known for low flux content and purity.
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
• Certify silica content (88-98%) to differentiate from alumina fire-clays
• Avoid bulk shipments mixed with mullite, risking subheading disputes
• Ensure no prior agglomeration, as built-up products go to 6815