GraphiteGraphite, chemically known as C, is a crystalline mineral of carbon with a hexagonal layered structure.
High temperature resistance：Graphite has a melting point of 3850±50°C and a boiling point of 4250°C. Even when exposed to extremely high temperatures or electric arc burning, it experiences minimal weight loss and has a low coefficient of thermal expansion. Graphite’s strength increases with temperature, doubling its strength at 2000°C. Common industrial applications include graphite crucibles and graphite heaters.
2.Conductivity and thermal conductivity：Graphite exhibits conductivity levels 100 times higher than typical non-metallic minerals and has better thermal conductivity than materials such as steel, iron, and lead. Its thermal conductivity decreases with increasing temperature, and it even acts as a thermal insulator at extremely high temperatures. Common applications include carbon brushes and carbon rods.
3. Lubrication：The lubrication properties of graphite depend on the size of its flakes. Larger flakes result in lower friction coefficients and better lubrication performance. Graphite has good chemical stability at room temperature, exhibiting resistance to acids, alkalis, and organic solvent corrosion. It is commonly used in graphite shaft seals.
4. Acid and alkali resistance：Due to its excellent thermal conductivity, corrosion resistance, and non-contaminating nature, graphite is extensively used as a substitute for stainless steel or other precious metals in the manufacturing of heat exchangers. It solves corrosion issues in various industries, such as the chemical industry. A common application is graphite heat exchangers.