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Re: [MW:23096] Re: Whether we can weld SA 335 P11 and SA 335 P91

By Materials & Welding
if thick is less than 13mm, direct welding with pup piece,otherwise buttering, but pwht is issue if u weld P11+P91 directly because AC1 temp for P11 is around 745 deg celsius which is very to PWHT temp of P91

THANKS & BEST REGARDS,
KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,
CONSULTANT-WELDING & QUALITY

On Thu, Jun 18, 2015 at 6:03 PM, Ranendra Chakraborty <ranendrac6@gmail.com> wrote:
Dear Pradip Sir,
Can you share your experience which one is better buttering or direct welding for metallurgical and strengthening point of view?
 
Regards,
Ranendra Chakraborty
On Thu, Jun 18, 2015 at 4:59 PM, pgoswami <pgoswami@quickclic.net> wrote:
Hi Arunkumar,
 
You may follow this  discussion and  the provided solutions to your solve your problem. The table below provides overall electrode selection matrix for DMWs involving Grade-91 and other alloys.
 
Thanks.
 
 
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Engineer/Specialist
Ontario, Canada
 
 

 



From: arunkumar periasamy <arun6trix@gmail.com>
To: materials-welding@googlegroups.com
Sent: Thursday, June 18, 2015 9:36 AM
Subject: [MW:23087] Re: Whether we can weld SA 335 P11 and SA 335 P91

it is
OD 60.3mm and Thickness= 11.07mm
pressure = 6 bars
temp= 585 c
it is an butt weld

it is not an condensing system it is an MAV system ( Lubricant supply system )



On Wednesday, June 17, 2015 at 7:29:47 PM UTC+5:30, arunkumar periasamy wrote:
In my condensing system my header line is having 2 materials
The line above sprayer which was connecting with condenser is SA 335 P11
And after sprayer till loop is SA 335 P91
 
Now my problem is whether we can weld or connect this SA 335 P11 and SA 335 P91 ?
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