JESSOP JS17Cr-7Ni is a semi-austenitic precipitation-hardening steel. Its composition gives it a unique and attractive combination of corrosion resistance, cold formability, high strength and hardness, excellent fatigue properties and minimum distortion upon heat treatment. Typical applications include aircraft structural members and equipment for the process industries. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-440. Producer or source: Jessop Steel Company.