Fused Silica

الوصف

Fused silica is manufactured from high purity natural silica stone, melted at extremely temperature. With high purity, high chemical and electricity resistance, lowest thermal expansion and exceptionally good thermal shock resistance, our fused silica is mainly used in the fields of epoxy molding compound, investment casting, refractory, ceramic, shell mould, silicon rubber, electrical insulator industries etc. Physical Properties Color White opaque or transparent True specific gravity 2.*1g/xxxxx Softening point About***0 'C Refractoriness SK*4（***0'C） Hardness 7（New Mohs） Coefficient of thermal expansion 0.5x***6(0~***0'C) Thermal conductivity 1.3w/m*k(*0'C) Dielectric constant 3.8(1MHz, *0'C) Chemical Analysis SiO2(%) >*9.9 Fe2O3(ppm) <*5 Li2O(ppm) <1.0 Al2O3(ppm) <**0 K2O(ppm) <*0 Na2O(ppm) <*0