Fused Silica APPLICATIONS:
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.
Specificaion:
foundries, technical ceramics, and other applications that require a consistent,
high purity product with very low thermal expansion.
Specificaion:
|
Chemistry composition
|
First Grade
|
Typical
|
Second Grade
|
Typical
|
|
SiO2
|
99.9%min
|
99.92
|
99.8%min
|
99.84
|
|
Fe2O3
|
50 PPM max
|
19
|
80 PPM max
|
50
|
|
Al2O3
|
100PPM max
|
90
|
150PPM max
|
120
|
|
K2O
|
30PPMmax
|
23
|
30PPMmax
|
25
|