Abstract

TECHALLOY 17-7 PH is a precipitation-hardenable high-strength stainless steel with excellent fatigue properties, good resistance to corrosion, minimum distortion on heat treatment and excellent spring characteristics. Its highest tensile strength and hardness are produced by starting with soft, solution-treated (annealed) material, cold working and then precipitation hardening at 900 F (Condition CH900); in this condition its elastic properties are similar to the best alloy spring steels. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-399. Producer or source: Techalloy Company Inc..

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