High-Alumina Fireclay Refractory Brick from Japan
A dense refractory brick made primarily from fireclay, fired at high temperatures to withstand extreme heat up to 1700°C. Used in furnace linings and kilns for its excellent thermal shock resistance and abrasion resistance. Classified under HTS 6902.90.10.10 as a clay-based refractory brick, distinct from siliceous or high-silica variants.
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 firing temperature exceeds 800°C per Chapter 69 notes to confirm refractory classification; provide lab test reports if challenged
• Include material composition certificate showing predominant clay content to avoid reclassification to siliceous earths (6902.10)
• Ensure proper packing to prevent breakage; common pitfall is insufficient documentation of thermal properties for end-use verification