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[MW:14500] Re: root causes for failing Pitting test in Duplex SS

By Materials & Welding
The reason is improper purging..... ensure internal purging upto third
run..... use low current.....ensure oxygen levels are below 75...

With regards
Dark Horse

On Jun 8, 10:56 am, khatri ankit <nids01dme...@gmail.com> wrote:
> Dear Expets,
>
> What will the root causes for failing the pitting corrosion resistance
> test for duplex SS (22% Cr grade).
>
> What should be the remedies or how to improve my welding or welding
> quality, so the duplex SS test coupon will passes for pitting test?
>
> (I made the weld test coupon for PQR to do the Pitting test, but the
> results have failed it.the electrode that we used for welding is
> E-2209)
>
> Kindly send ur reviews, so i can improve it the same.
>
> Regards,
>
> Ankit Khatri

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