jignesh rana.
--For one of the project we have been guided that we can use 3.5 % Nickel Steel ( A 203 Gr E) up to -104° C, design temperature.
But I am in under impression that if I will go with, for example SMAW electrode (E 7015-C2L, E 7016-C2L & E 7018-C2L) then as per ASME Sec II C, it can be use up to -100 ° C.
My question is that should we use same electrode for -104 ° C.
When we talk about plate material one of the very reknown German steel mill is agree to supply A 203 Gr E on -104 ° C.
Best regards
Purvin Bhatt
Linde AG - Linde Engineering Division
ENM - Engineering QA/QC
Dr. Carl-von-Linde-Str. 6-14
82409 Pullach/Germany
Phone +49.89.7445 - 5441 • Fax +49.89.7445 - 4952
E: purvin.bhatt@linde-le.com
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Please do not print this email unless it is absolutely necessary.Abhishek Rai ---07/10/2013 17:01:49---Dear Sir , the thickness of P91 material is 21 mm and for SS304 material is 12 mm.
From: Abhishek Rai <abhishekkrrai@gmail.com>
To: pgoswami <pgoswami@quickclic.net>
Cc: materials-welding@googlegroups.com
Date: 07/10/2013 17:01
Subject: Re: [MW:18870] PWHT Requirement for dissimilar welding b/w P91 & SS304
Sent by: materials-welding@googlegroups.com
Dear Sir ,
the thickness of P91 material is 21 mm and for SS304 material is 12 mm. This is the fillet joint for support as running pipe is of P91 material and support pad is of SS304 H.
Please advise for PWHT & WPS .
Regard's
Abhishek Rai
On Mon, Oct 7, 2013 at 4:05 PM, pgoswami <pgoswami@quickclic.net> wrote:Hello Abhisekh Rai,
What's the thickness involved here ??
Thanks
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Specialist
Ontario, Canada
pgoswami@quickclic.net
pgoswami@sympatico.ca
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of HAREESH K V
Sent: Monday, October 07, 2013 3:26 AM
To: materials-welding
Subject: Re: [MW:18867] PWHT Requirement for dissimilar welding b/w P91 & SS304
Sa335 Gr P91 side to be buttered up to a minimum of 13mm with ERNiCr-3. Then PWHT to be done for that side as per the requirement of P91 to P91 welding (Normally 720 deg temperature up to a minimim of 2hrs). Then face prepration is to be done (Ensure a 13mm buttering after this face prepration)
Then prepare the joint b/w P91 and SS304 and weld with ERNiCr-3
No PWHT requirements after this
On Sun, Oct 6, 2013 at 2:05 AM, Octane Mac <octane.mac@gmail.com> wrote:B31.3: 704-760 C, minimum holding time 2 hrs. Holding time 1hr/in.
B31.1: 730-775 C, minimum holding time 30 minutes. Holding time 1hr/in. Note: As it is a dissimilar material welding and a nickel based consumable is recommended therefore minimum holding temperature shall be 700 C.
Octane
On Fri, Oct 4, 2013 at 7:33 PM, Abhishek Rai <abhishekkrrai@gmail.com> wrote:Dear Sir,
Please confirm the requirement of PWHT b/w welding of P91 & SS 304.the operating temperature of piping is 640 deg c .
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