200M - 6000M
Fused silica
is made of high purity crystal silica by electrically
fusing (fusing temperature 1800-2000℃) to amorphous Silicon
dioxide , then it was classed to different grades by manual
and then specially engineered to granular and powder form.
Because fused silica has a very low thermal conductivity
and excellent thermal shock resistance, it is used in lots
of fields of investment casting,refractory,ceramic,epoxy
modling compound,fusion bounded epoxy.