graphite clay crucible: 1) materials:graphite+Quartz+Sic+Clay 2) temperature:up to 1600 3) density:over 1.65g/cm3 ♣ Properties and Usage: § It is widely used to smelt copper, crucible, aluminum and other nonferrous metal. § It can help a high purity metallurgy and has the characteristic of temperature resistance, good heat conductivity and long life. ♣ Size: 30#, 40#, 80#, 150#, 200#~1000# and so ...