Autoclave materials [ˈɔː.təʊ.kleɪv məˈtɪərɪəlz ] – autoclave-hardening materials, products, building materials and products that harden at high temperature and pressure, based on silicate binders (fine silica, cement and their mixtures). To prepare A.M. they are subjected to heat and moisture treatment (steaming) for 8-16 hours in autoclaves with saturated water steam at a temperature of 175-200 C under a pressure of 0.9-1.6 MPa. Components (boron, sand, water) as a result of physical and chemical interaction, calcium hydro silicates are formed, which ensure hardening and water resistance of materials.
Ex. Autoclave materials such as reinforced steel and heat-resistant alloys are crucial for withstanding high pressure and temperature conditions in the mining industry, ensuring the safe and effective processing of ores.