Re: [MW:11853] T91+SS welding

And as our dear friend "Prasad Joshi" said you can use Inconel buttering followed by PWHT then bevel and weld.
The buttering shall be thick enogh so that the HAZ of subsequent welds doesn't include any T91 material...

Ramin  Kondori

   QC/Welding Engineer 

         IWE AT 0070

   

On Thu, Jul 21, 2011 at 8:47 PM, Ramin Kondori <raminkondori@gmail.com> wrote:

Dear S.Nareshkumar:

Tricky Subject...
Study the attached file
In page 3, you sea two figures (left diagram) that show the required
Heat treatment and Temp. control during welding for P91 (that is same
as T91) and you will realize that T91 definitely needs to be post-weld
heat treated in 760 degrees...
This is bad for 304, very bad...

BUT

Please give me more details on the location of the joint and the
service conditions.
And why are you welding these two materials together...?
Couldn't you use flanged joints instead...?

I think eventually, it's easier to change the design (if possible)...

Anyway, please send more details...!!!

Regards
Ramin Kondori
IWE AT 0070

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On 7/18/11, Naresh Kumar <snareshkumar30@yahoo.com> wrote:
> Dear friends,
> Any one guide me whether SA213 T91+SA213 TP304 welding PWHT require or not.
> Filler wire used:
> ER NiCr3
>
> Regards,
> S.Nareshkumar
>
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--
Ramin  Kondori
*   QC/Welding Engineer *
*         IWE AT 0070*
**

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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.