COOPER PH-55B is a high-strength high-ductility alloy recommended for corrosion resistance of parts subjected to a combination of stress and shock. It responds to an age-hardening heat treatment. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as heat treating, machining, joining, and surface treatment. Filing Code: SS-117. Producer or source: Cooper Alloy Corporation.