Fused α-β corundum bricks are composed of approximately 50% α-corundum and β-corundum respectively. The interlocking crystalline structure formed by their intertwined crystallization creates an extremely dense matrix, demonstrating excellent resistance to strong alkalis.
Within the temperature range below 1350°C, its erosion resistance against molten glass is comparable to that of AZS. Containing minimal impurities such as Fe₂O₃ and TiO₂, these bricks possess a minimal glassy phase in the matrix. This characteristic ensures that when in contact with molten glass, they rarely generate bubbles or foreign inclusions, thereby avoiding contamination of the molten glass.
Consequently, they are most suitable for high-grade glass furnace applications including working end walls and covering layers, gating systems, channels, and similar components. They offer excellent performance and cost-effectiveness.