We've been making and exporting fused silica sand and powder for many years to the industry of refractory, investment casting, thermal ceramic,fused silica crucible,fused silica ceramic roller etc.

1. Fused silica grains/powder

1.1 Physical Properties

Composition: SiO2

Structure: Amorphous

Colour: Transparent or white
Melting: Temperature approx.1750℃
Specific Gravity: 2.21g/cm3
Hardness:  7 Mohs
Thermal Expansion:  0.5*10-6

1.2.Chemical composition

SiO2>99.9%,Fe2O3<30ppm,Al2O3<200ppm,Na2O<30ppm,K2O<30ppm

1.3.Different sizes are available:

0-0.5mm, 0.2-0.5mm,0-1mm,1-3mm,3-5mm,

-4/10mesh,-10/20mesh,-20/50mesh,-30/50mesh.-50/100mesh,-6/50mesh,-100mesh, 120F , 270F, 325F , 400F , 600mesh,ect.