Abstract
The stress corrosion cracking susceptibility of four low alloy steels has been evaluated by alternate immersion testing in a 3.5 percent salt solution. The variables investigated were heat treatment, tensile strength level, test stress level, notch sensitivity and mode of fracture. Results show that notch sensitivity can be correlated with stress corrosion cracking susceptibility. At strength levels below 200 ksi, all steels showed adequate resistance to stress corrosion cracking. At strength levels above 200 ksi, the following alloys were most resistant to stress corrosion cracking at the indicated tensile strength levels:
Limited testing was done on two precipitation hardening stainless steels, AM 350 and AM 355.
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