Monday, May 22, 2023

[MW:34234] Dissimilar chemical composition weld

Dear experts,
                Please advise about weld metal deposit  composition for base metal cuni 90/10 (UNS C 70600) and filler wire CuNi70/30 (UNS C 71500) combination of this material.We checked PMI at weld joint area but composition is not matching with ASME sec II part C .Can you give guidance for any PMI acceptance criteria?Here I attached PMI report for your review.

As per ASME sec II filler metal nickel percentage is 29-32 % and copper remaining.


 Regards

Aidroos      

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