Type 418 Special is a corrosion and heat-resistant stainless steel recommended for high temperature applications that require good mechanical properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-130. Producer or source: Allegheny Ludlum Corporation.