Refractories 
1.Description
Fused Silica is made from high purity silica, using unique fusion technology to ensure the highest quality.
2.Characteristics
Fused Silica has an extremely low coefficient of thermal expansion, high resistance to thermal expansion and high resistance to thermal shock.
3.Application
Fused Silica is an excellent raw material for use in investment casting, refractories, foundries, technical ceramics, and other applications that require a consistent, high purity product with very low thermal expansion.
4.Specification
Item | First Grade | Typical Value | Second Grade | Typical Value |
SiO2 | 99.9% min | 99.92% | 99.8% min | 99.84% |
Al2O3 | 100PPM max | 90PPM | 150PPM max | 120PPM |
Fe2O3 | 50PPM max | 19PPPM | 80PPM max | 50PPM |
K2O | 30PPM max | 23PPM | 30PPM max | 25PPM |