1. High density
2. Good thermal stability and distortion resistance at high temperature.
3. High mechanical strength at high temperature.
4. Excellent thermal shock resistance.
5. High thermal conductivity.
6. Excellent corrosion resistance against chemicals at high temperature.
7. High abrasion resistance.
8. Long service life
They can be used for resistance furnace, induction furnace, biological particles furnace, gas furnace, coke oven, furnace oil, and gas furnace to melt gold, silver, copper, aluminum, tin, lead, zinc and other nonferrous metals, and various non-ferrous alloys