Graphite rod is often used as the heating element of high temperature vacuum furnace. The maximum operating temperature can reach 3000 ℃. It is easy to oxidize at high temperature. Except for vacuum, it can only be used in neutral or reducing atmosphere. Its thermal expansion coefficient is small, its thermal conductivity is large, and its resistance coefficient is (8~13) × 10-6 Ω · m, better processability than SiC and MoSi2 rods, high temperature resistance, good resistance to extreme cold and extreme heat, and lower price.

Graphite rod is a non-metallic product. As a necessary cutting consumable before welding in the carbon arc air gouging cutting process, it is made of carbon, graphite and appropriate adhesive by extrusion forming, baking and rotating at 2200 ℃, and then plating a layer of copper. It has high temperature resistance, good conductivity, and is not easy to break. It is suitable for cutting metal into the required shape.