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Re: [MW:6105] disimilar welding

By Materials & Welding
Dear All,
 
 
It is conformed that chip back is not possible so, we have to do the welding with either by ER309L+E309L or by ERNiCr-3+ENiCrFe-3.
 
If there is a restriction on ferrite No. (Generally 3 - 8 FN) for austanitic stainless steel weld then we have to use Inconel because with SS309L the ferrite limit can not be achieved at required level.
 
 
Regards,
Bhavesh Patel

On Fri, Jul 23, 2010 at 9:33 AM, <jignesh.rana@linde-le.com> wrote:

Dear All,

Fully agree with Mr. Raghuram's feedback.

At the same time, like to draw the attention to guidelines given by API.  

API 582 Clause no. 6.2.2 further restricts use of Ni based electrodes as per following design temperature.


Electrrode               Max, Design Temp ( Non -Sulphur Environment)                         Max Desing Temp. ( sulphur Environment)

E NiCrFe3                 540 C                                                                                                               370 C
ERNiCr3                    760 C                                                                                                               400C                
ENiCrFe2                  760 C                                                                                                               400C
ERNiCrMo3              590 C                                                                                                               590C

With Best Regards,

Jignesh R Rana
Manager - QA & QC

Linde Engineering India Pvt. Ltd.
38, Nutan Bharat Society, Alkapuri, Vadodara 390007, India
Tel.: +91 265 3056789, Fax: +91 265 2335213 , Mobil:  +91 90999 86019
jignesh.rana@linde-le.com, www.linde-india.com

This e-mail is confidential. If you are not the intended recipient, please notify us immediately. You should not disclose its contents to any other person nor use it for any purposes.





Raghuram Bathula <raghurambathula@gmail.com>
Sent by: materials-welding@googlegroups.com

22/07/10 20:10


To
materials-welding@googlegroups.com
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Subject
Re: [MW:6082] disimilar welding




it depends on various parameters like thickness involved, code of construction and design conditions.
If DT>315 °C or PWHT is involved Inconel is preferred.

On Thu, Jul 22, 2010 at 5:37 PM, Kavathekar, Sachin <Sachin.Kavathekar@jacobs.com> wrote:

Clad thk is 3mm.
But why Inconel?

Regards,
Sachin A Kavathekar.

-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of B.Raghuram
Sent: Thursday, July 22, 2010 5:32 PM
To: materials-welding@googlegroups.com
Subject: RE: [MW:6076] disimilar welding

What is you clad thickness? If there no restriction from process point of
view, weld full thick by 309, or Inconel.

sent from my handheld
-----Original Message-----
From: Muhammed Ibrahim PK
Sent:  22/07/2010 4:29:14 pm
Subject:  Re: [MW:6075] disimilar welding

Hi,

They have to do carbon steel buttweld first.
Then clad restoration of the joint with 309LMO Barrier layer and 316L for
subsequent layer.

Thanks & Regards
Muhammed Ibrahim PK



On 22 July 2010 13:37, Kavathekar, Sachin
<Sachin.Kavathekar@jacobs.com>wrote:

>
>
> Dear All,
>
>
>
> My site contractor to do pipe long seam welding of SA516 GR. 70 + SS316
> cladded plate material. Back chip is not accessible of this joint.
>
>
>
> They have query, if first complete SS316 welding by using 316 electrode/
> filler wire & subsequent layer will be E- 309MO & E- 7018.
>
>
>
> Is it acceptable? I think they should do welding with E- 309MO up to carbon
> steel after  316 welding.
>
>
> Please advice.
>
> Regards,
>
> Sachin A Kavathekar

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