silica sand

الوصف

Fused Silica is made of highest purity Chinese crystal Silica by electrically fusing (fusing temperature ********0ºC)to amorophos Silicon dioxide , then specially engineered ingots, granular and flour form designed for different usage. This product has a very low thermal conductivity and excellent thermal shock resistance. 
 
Special Features: 
Near zero thermal expansion coefficient
Excellent thermal shock resistance
Pure(high SiO2 content,low Iron, Potassium & Sodium Oxide)
Consistent Chemistry
Statistically controlled particle size distribution
Main Applications:
EMC (Epoxy Molding Compound)
Investment Casting ,shell mould product
Refractory & Ceramic materials
Paint
Others
Chemical Composition: 
Item Ingot & Granule Powder
SiO2 *9.9% *9.8%
AL2O3 *0ppm **0ppm
Fe2O3 *0ppm *0ppm
Na2O *0ppm *0ppm
K2O *0ppm *0ppm
 
Physical Properties: 
Appearance: Transparent Ingots, Granule or White Powder
Specific Gravity: 2.*1
Hardness( Mohs): 7.0
PH: **7
Whiteness: *5Min.
Size Available: (Ingot, Granules and powder): 
(1) ***0mm, ****0mm, **5mm, **3mm, **1mm, **0.5mm, **0.2mm,**0.5mm, 0.**0.2mm, 
0.**0.1mm, 0.**0.1mm, 0.**1mm. 
(2) *4**0mesh, **0**0mesh, **0**0mesh, **0**0mesh,**0***0mesh, ***0F, 
***0F, ***5F, ***0F, ***0F.
Please contact me directly for competitiveprice and this is Ricardo Wang