Zirconia Refractory Bricks
Zirconia refractory bricks utilize stabilized zirconium oxide for ultra-high temperature resistance in glass melting tanks and petrochemical reactors. Their low thermal expansion prevents cracking under cyclic heating. HTS 6902.90.10 includes these advanced 'other' refractory bricks.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for statistical reporting of specialty zirconias
Other refractory ceramic goods capture niche zirconate compositions.
If imported as prepared unfired zirconia mixes
Chemical preparations for refractories fall under Chapter 38.
If sold as large constructional blocks vs standard bricks
Dimensional differences distinguish bricks from blocks/tiles in 6903.
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Import Tips & Compliance
• Submit XRF analysis confirming ZrO2 content >80% for proper valuation
• Ensure export country certifications match US EPA refractory import standards
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