JS Alloy 255 is a duplex ferritic-austenitic stainless steel. It has been designed to provide a superior combination of high stength and excellent corrosion resistance for a wide variety of applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-495. Producer or source: Jessop Steel Company.