Re: [MW:16827] Pitting Corrosion Resistance Failure in DSS

Dear sir
The selection of welding rod/ filler metal PREN . shall be littile
higher side that of parant material PREN, this will be give good
results,

Regards
GSR

On Wed, Feb 20, 2013 at 8:38 AM, E.S.Mani <maniesbk@gmail.com> wrote:
> Dear Experts,
>
> We are welded DSS A790 UNS S31803 Pipe to pipe PQR welding and we sent it
> for Mechanical test. But we found PITTING.
>
> The details are below and i attached the test result also.
>
> Material : A 790 UNS S31803 (Pipe to Pipe)
>
> Size : 4" X 8.56mm
>
> Filler Used : ER2209 (Metrode) 2.4mm
>
> Max. Interpass : Below 50ºC
>
> Max. Heat Input : 1.2 KJ/MM
>
> Test Method : ASTM 923 Methode C (22ºC – 24HRS)
>
>
> Now we are planning to do the PQR again. So please give me you idea to avoid
> the failure again.
>
>
> Thanks.
>
>
>
> --
>
> Regards,
>
> E.Subramanian
>
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