Silicon carbide is a very stable and chemically inert compound. It is an extremely hard material, with a Mohs hardness rating of 9, close to that of diamond. It is also characterized by its high thermal conductivity, high-temperature strength, low thermal expansion, resistance to chemical reaction, and ability to function as a semiconductor. Its superior thermal strength and conductivity make Silicon Carbide a favoured material for linings in reactors and boilers in the chemical industry. Its high refractoriness also offers greater durability and safety.