Graphite is an allotrope of carbon. It is a gray-black, opaque solid with stable chemical properties and corrosion resistance. It is not easy to react with acid, alkali and other agents. Natural graphite comes from graphite deposits, and can also be made from petroleum coke, asphalt coke and other raw materials through a series of processes. Graphite burns in oxygen to generate carbon dioxide, which can be oxidized by strong oxidants such as concentrated nitric acid and potassium permanganate. It can be used as antiwear agent and lubricant, and high-purity graphite can be used as neutron retarder in atomic reactors. It can also be used to manufacture crucibles, electrodes, brushes, dry batteries, graphite fibers, heat exchangers, coolers, electric arc furnaces, arc lamps, pencil refills, etc.

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.