OEM Graphite Blocks Supplier Graphite for sale are generally divided into natural graphite blocks and artificial graphite blocks. The most widely used ones are artificial graphite blocks. As one of the biggest grafit block suppliers/manufacturers in China, WH Graphite can provide you with all kinds of OEM graphite blocks as you need. Block graphite is an allotroph of carbon, gray black graphite carbon block, opaque solid graphite block, melting point of 3652â??, boiling point of 4827â??. Solid carbon graphite block, a stable chemical property, is corrosion resistance, and is hard to react with acid, alkali and other agents. Carbon graphite block burns in oxygen at 687â?? to form carbon dioxide. Carbon graphite blocks can be oxidized by strong oxidants such as concentrated nitric acid and potassium permanganate. The graphite carbon block also can be used as an antiwear agent or lubricant. High purity graphite as a neutron decelerating agent in the atomic reactor, can be used to manufacture graphite crucible, electrode, brush, dry cell, graphite fiber, heat exchanger, cooler, arc furnace, arc lamp, pencil core, and so on. What Are graphit block Used For? China solid graphite rod is used in silicon carbide furnaces and other metallurgical furnaces, resistance furnace lining, and conductive material, graphite vacuum furnace as well as permeable graphite heat exchanger.