Saturday, December 25, 2010

[MW:8940] Re: Dissimilar welding filler wire 309LMo

rewrite the WPS and use it, no need to qualify new PQR.

On Dec 25, 8:06 am, arvinda shan <arvindas...@gmail.com> wrote:
> Dear All,
>
> I need a clarification from u.
>
> For dissimilar material ie. P1 and P8 ( 312 TP 316L) as per DGS recommends
> 309LMo. But the PQR qualifies only in 309L for dissimilar. There are no
> change in F number, P number, SFA number. But only Mo content. In 316L, 2%
> of Mo. But in filler of 309L only 0.75% of Moly. As in DGS specifically
> mentioned 309LMo for dissimilar for those category, can we use the same WPS
> or new PQR to qualify.
>
> Need any separate procedure or no need?
>
> Plz clarify.
>
> Regards
>
> arvinda

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