Hua Yuan Series Fused Silica is made of highest purity Chinese crystal Silica by electrically fusing (fusing temperature 1800-2000℃)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 

Fused Silica Lump 
Size: 1-100MM 
SiO2: 99.99%-99.95%; 
Fe2O3: 6ppM max; 
Li2O: 1.0ppM max; 
Al2O3: 30ppM-100ppM; 
K2O: 9ppM max; 
Na2O: 11 ppM max; 
EC: 1.8-2.2 PH: 5.8