[MW:29482] ALUMINIUM WELDING - Alloy SB 5083-O

Dear All,

As per the below WPS,  PWHT ( Aging) is required at 350 to 380 C in Ar or Ar+ He Shielding.  The aging time also different in both cases. Why it is so.  How this aging to be.  Please share your experiences.  This for LNG piping and to connect two cold boxes of  liquid Nitrogen.

Thanks and regards

Venkat

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