Graphite crucible has good thermal conductivity high temperature resistance. In the process of high temperature use, the thermal expansion coefficient is small, it has certain strain resistance to rapid heating rapid cooling. It has strong corrosion resistance to acids alkaline solutions, has excellent chemical stability. It is widely used in the smelting of alloy tool steel the smelting of non-ferrous metals their alloys in metallurgy, foundry, machinery, chemical other industrial sectors. has a good technical economic effect.