Stress Corrosion Properties of High Strength Precipitation Hardening Stainless Steels

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Abstract
The plane-strain fracture toughness KIC and stress corrosion threshold KISCC (in 3.5% aqueous sodium chloride solution) have been determined for the following high strength, precipitation hardening steels: 17-7 PH (RH 950, TH 1050), PH 15-7Mo (RH 950, TH 1050), AM 355 (SCT 850, SCT 1000), AM 362 (H 900, H 1000), AM 364 (H 850, H 950), 17-4 PH (H 900, H 1000), 15-5 PH air melted and vacuum melted (H 900, H 1000), PH 13-8Mo (H 950), and Custom 455 (H 950). Correlations of KISCC with service performance and smooth-specimen test data are discussed.

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