17Cr-4Ni EZ is a precipitation hardening stainless steel offering engineers and designers a wide selection of strength and hardness levels. A simple one-step aging treatment provides end users a unique combination of strength, toughness, and corrosion resistance. 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 low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-551. Producer or source: AL Tech Specialty Steel Corporation.