Re: [MW:32369] filler material between 304L and 316L

Mo  also increase delta ferrite which is inferior for resistance corrosion. Mo is good for pitting or previa corrosion resistance. 

On Thu, May 13, 2021, 10:09 AM Ron Mays <ronmays.wa@gmail.com> wrote:

Stainless steel is commonly used for its corrosion resistance properties.

When welding different grades together, consideration should be given to the selection of a filler metal that provides the mechanical properties required and the weld ferrite content.

Ron Mays

On Thu, May 13, 2021 at 1:20 PM Kannayeram Gnanapandithan <kgpandithan@gmail.com> wrote:

Ref  31.1, 127.2.1D

On Wed, May 12, 2021, 12:01 PM Ganesh Muthurajan <qceng.mg@gmail.com> wrote:

Gents.

Apart from the PMI Rejection, as per WPS (also PQR) which filler and electrode  you are using.

I. If the PQR and WPS having qualified for 304L and 316L for 308L.

  There is no issue with PMI Rejection.

But. As per ASME B 31.3 

We have always select lower tensile and higher chemical analysis.  

Selection of filler ASME SEC 2C . 

In this case we gave to go for 316L 

On Sat, 8 May 2021, 9:39 am Chiranjeevi A, <chiranjeevipuvvula@gmail.com> wrote:

Dear Experts,

     At the site 308L filler wire used for the Pipe joint between 304L and 316L.  After doing the PMI QC rejected the joints and suggesting to use 316 filler.

   Experts kindly share the details of the code reference to accept or any procedure to avoid cutting 20joints.

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