Three nickel-base alloys, namely Waspaloy (UNS-N-07001), Alloy C-22(UNS-N06022) and Alloy C-276(UNS-N10276) were tested for evaluation of their high temperature tensile properties and stress corrosion cracking resistance in an environment relevant to the proposed nuclear hydrogen initiative program. Comprehensive test results including the fractographic evaluations of the test specimens are presented in this paper.
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