AB Grade Fused Silica has recently gained strong momentum in the global market as industries continue to prioritize high-purity, low-thermal-expansion materials for precision casting and advanced refractory applications. Known for its excellent chemical stability and superior thermal shock resistance, AB Grade Fused Silica is becoming a preferred raw material for foundries, ceramics manufacturers, and refractory producers worldwide.

Produced through high-temperature fusion of selected quartz followed by controlled crushing and classification, AB Grade Fused Silica offers consistent particle size distribution and extremely low levels of impurities. The 0.2–0.5 mm and other fine-grain specifications are particularly favored in investment casting shells, where stable performance and minimal expansion are critical to achieving high-accuracy molds and smooth casting surfaces.

In the refractory industry, AB Grade Fused Silica is widely used in low-cement and no-cement castables, providing improved flowability, reduced shrinkage, and enhanced service life under high-temperature cycling. Its low thermal conductivity also makes it suitable for energy-efficient insulation materials.

Driven by rising global demand from the casting and metallurgical sectors, many suppliers are expanding production capacity and improving quality control to deliver stable and high-purity fused silica grades. With increasing emphasis on clean manufacturing and high-precision applications, the market outlook for AB Grade Fused Silica remains highly positive.