Attachment clip material is Unknown (As per drg SA240 TY SS304L) to pressure part is shell (SA516 GR.70N). No MTC and traceability for attachment material. Same to be used in 'R'-Stamp repairing vessel.
Cases,
1, Can weld with PMI and Hardness testing of unknown and verifying weldability and strength of replacement material as per sec viii-1 and NBIC ?
2, Can use No traceability (No product marking) material as per ASME SEC VIII-1 for attachment welds ?
3, Can use SA240 TY316L with traceability material instead of SA240 TY304L (different grade)?
Kindly advise us.
Sam-Kuwait
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