What is the maximum allowed thickness reduction resulting from cold forming before solution anneal/ water quenching treatment would be required?
A precise answer to this question has not been developed. However, it has been common in construction of 2205 duplex stainless steel vessels to apply the same limits that are applied to carbon steels by the ASME Code. This limitation, while possibly overly conservative, has not led to any problems in service. For vessels not being constructed to ASME Code, significantly more aggressive deformation has been permitted, with no reports of problems attributed to this cold worked condition.
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