Re: [MW:23088] Re: Whether we can weld SA 335 P11 and SA 335 P91

YES you can weld SA335 P11 to SA 335 P91  with care.

As the PWHT temperature of P91 say 760 degC may exceed the lower transformation temperature of P11, a transition piece is recommended. Else butter the P91 portion using E9018 B3, perform the PWHT at 760 for 1 Hour then weld the buttered portion to P11 using E8018 B2 and perform PWHT at 690degC.

 

Thanks & Regards

J.Gerald Jayakumar

0091-9344954677

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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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