2023 Factory Consistent Quality Fused Silica for Refractory, Investment Casting, Ceramic

We're fused silica sand and powder manufacturer/factory: Consistent Quality,Best Price and Severice!!!Product DescriptionFused Silica sand&powder Specifications:   1.Physical Properties1.1CompositionSiO21.2StructureAmorphous1.3ColourTransparent or white1.4Melting Temperatureapprox.1750ºC1.5Specific Gravity2.21g/cm31.6Hardness7 Mohs1.7Thermal Expansion0.5*10-62.Chemical Properties   2.1SiO2>99.9%2.2Al2O3