Due to High Carbon Content Carbide Precipitaion may be there.
Alternatevely
The welding of above may be carried out with E308 or E308H consumable.
Due to high carbon SR of complete joint is not advisable.
As per code/service requirement if SR is mandatory for joint, you can
butter the carbon steel portion with SS308/308H( but Preferably with
SS308L), minimum thickness of 5 mm.
Stress Relieve the butter Portion as per thickness.
Weld the P1 to P8 with 308H consumable.
Regards
Jaspal Singh, CWI-AWS, CSWIP-3.1
Assistant Manager – Quality Assurance
Process Equipment Division
ISGEC, Yamuna Nagar, Haryana -135001
Phone: 911732307251
Ext: 251 Mb: +91 9996624244
On Sep 26, 2:47 pm, "agstes" <ags...@gmail.com> wrote:
> Dear Sudharsan S,
>
> This particular joint is one of the joint from the heat recovery steam generator (unfired) constructed as per ASME Section VIII Div.1. As per UW-2 (c) this particular steam generator needs to be heat treated.
> Thickness involved 12.7 mm.
> In my opinion there should not be any problem for the SS material like carbide precipitation.
> Please suggest the heat cycle.
>
> Thanks in advance.
> Regards
> Shinde
>
>
>
> ----- Original Message -----
> From: sudharsan s
> To: materials-welding@googlegroups.com
> Sent: Sunday, September 26, 2010 1:55 PM
> Subject: Re: [MW:7199] Heat treatment Butt joint of SA-210 Gr.A1 and SA-312 TP 304H
>
> Shinde,
>
> SA 210 Gr A1 is a seamless medium carbon (0.27% max) steel tubes. If you weld this to SA 312 TP 304H (18% Cr 8% Ni) with fully austenitic electrode like AWS E/ER 309LMo, from metallurgical point of view , there is no need for PWHT.
>
> Can you just tell me why you need PWHT, is it from process point of view or for any other reason? What is the thickness as well.
>
> On Fri, Sep 24, 2010 at 6:25 PM, agstes <ags...@gmail.com> wrote:
>
> Dear All,
>
> I want to know the post weld heat treatment procedure/cycle for the butt joint of SA-210 Gr.A1 (P1) and SA-312 TP 304H (P8).
>
> Thanks in advance.
>
> Shinde A.G.
>
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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.
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