Pyrodur 4923 is a high-temperature resistant stainless steel with molybdenum addition. Special properties include resistant to scaling up to around 600 C (1110 F), and maximum hardness approximately 590 Hv. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1277. Producer or source: Deutsche Edelstahlwerke.