graphite crucible:
high purity,fine grain,good performance of electrical conductivity and thermal conductivity,high density,good corrosion resistance,thermal shock resistance,thermal stability,high mechanical strength ,low permeability and good oxidation resistance,the raw material is capable of producing various semiconductor molds and radio tube
graphite molds material index:
content:99.99%
density:1.87g/cm3
compressive strength:65mpa
shore hardness:55
porosity:15%