The level of stress at which stress corrosion cracking can occur in nickel-based alloys is a key factor in assessing the effectiveness of methods that have been proposed to mitigate such cracking. As various mitigation methods have different approaches and capabilities, the stress limit specified for each case has varied. This paper will review the available data on this subject and develop a consistent basis for defining the stress levels that would be required to initiate stress corrosion cracking in these materials. This paper may be applied to improve the consistency of the requirements of the various mitigation methods involving stress improvement.

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