Chromium-Corundum Refractory Bricks
High-chrome corundum bricks with Cr2O3>50% for glass furnace superstructures resisting batch carryover. Dense microstructure prevents glass penetration. Covered by HTS 6902.10.50.00 for chromium oxide dominant refractories.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If high alumina >50% Al2O3
Corundum-dominant shifts to alumina refractory classification.
If fused quartz refractories
Silica glass refractories classify in Chapter 70.
Not sure which classification is right?
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Import Tips & Compliance
• Provide glass contact test data demonstrating non-wetting properties
• Declare apparent porosity (<15% typical) confirming density
• Separate from melting end refractories with different compositions
Related Products under HTS 6902.10.50.00
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