Results of the stress corrosion cracking tests showed that wrought UNS S31803 was not resistant to environmentally-induced cracking or corrosion in the test environment. A difference in surface finish did not have a significant effect.
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Environmentally-assisted cracking (EAC) of nickel-base alloys has been observed in the primary coolant of light water reactors (LWRs). One of the main issues is primary water stress corrosion cracking (PWSCC) of Alloy 182 which has been a concern for a long time. For assumed or existing defects, disposition curves (crack growth rate as function of stress intensity factor) are available.