Re: [MW:34236] Dissimilar chemical composition weld

Hi,

1. Alloys are acceplable if the alloying elements are each within 10% of the specifled range of values. 

2. Welds with consumables that match, or nearly match, the base meal composilion shall be within +12.5% of the ranges allowed in ASME SEC IIC for each element.Chemical Composition of Material specs must be verifled/avallable.

thank you 

On Tue, 23 May 2023 at 6:57 AM Sintha Aidroos <iti.sintha@gmail.com> wrote:

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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