Graphite rod used in the electric heating body of high temperature vacuum furnace, the highest temperature can reach 3000℃, easy to oxidation at high temperature, in addition to vacuum, can only use it in the neutral atmosphere and reducing atmosphere of small thermal expansion coefficient, thermal conductivity, resistivity (8 ~ 13) 10-6 Ω m., good workability is better than SiC MoSi2 rods, high temperature resistant, resistant to extreme cold hot , price is cheap.
