Re: [MW:20866] WPQ for SS to Inconel Welding

yes

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

On Fri, May 23, 2014 at 8:05 AM, Hrushikesh Sangamnerkar <hrushi612@gmail.com> wrote:

Do u mean to say it will lead to secondary hardening due to Mo?

On May 22, 2014 5:26 PM, "kannayeram gnanapandithan" <kgpandithan@gmail.com> wrote:

In PWHT of high temp, Due to presence  of Mo, it will become Hardened(  Weld Metal)

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

On Thu, May 22, 2014 at 7:20 AM, Ghafor Mohamad <ghaformohamad@gmail.com> wrote:

Hi Kg Pandhitan

 

May I know why ERNiMo3 (Inconel 625) shall not be used?

 

Thanks

Ghafor Mohamad, SQE ALSTOM POWER

On Wed, May 21, 2014 at 8:14 PM, kannayeram gnanapandithan <kgpandithan@gmail.com> wrote:

Is it Inconel 600/625??

For dissimilar combination, it is better go for ER NiCr3 for GTAW / ENiCrFe3 (for service temp less than 680C) or ENiCrFe2 

if it is subjected PWHT, do not use NiCrMo3 (Inconel 625)

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

On Wed, May 21, 2014 at 10:27 AM, 'Syed Taher' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Weldability of your ER308L/347 and ERNiCrFe-2 combination is OK.

even if you use E308L, you will get something close to a super austenitic weld metal which may be acceptable for your application. But again, it depends on your application. I have recently prepared a WPS for welding super-duplex stainless steel to Inconel which I had only one option for filler metal and that was because my job specification was quite stringent. ER NiCrMo-3 is weldable but the resulted weld metal could not meet the job requirements. 

syed taher

On Saturday, April 26, 2014 6:14 AM, Ramin Kondori <raminkondori@gmail.com> wrote:

Weldability of your ER308L/347 and ERNiCrFe-2 combination is OK.

even if you use E308L, you will get something close to a super austenitic weld metal which may be acceptable for your application. But again, it depends on your application. I have recently prepared a WPS for welding super-duplex stainless steel to Inconel which I had only one option for filler metal and that was because my job specification was quite stringent. ER NiCrMo-3 is weldable but the resulted weld metal could not meet the job requirements.

Hence, review your job specification to see what are your requirements...

What is it that you are welding...?
What is your fluid...?
Any impact requirement...?

Any NACE requirement...?

Best Regards

Ramin Kondori

Sr. QA/QC engineer

Yadavaran Oilfield Project

SIPC (SINOPEC)

On Thu, Apr 24, 2014 at 6:42 AM, Hrushikesh Sangamnerkar <hrushi612@gmail.com> wrote:

Dear sir,
Thanks for your response. Wanted to know whether can I use a combination of ER308L/347 and ERNiCrFe-2?

On Apr 24, 2014 4:24 AM, "Ramin Kondori" <raminkondori@gmail.com> wrote:

ER NiCrMo-3 will do the job for you...

Some even use ER309L but the above mentioned filler metal is 100% guarantied choice and I even do not need to know your application. 

Best Regards

Ramin Kondori

Sr. QA/QC engineer

Yadavaran Oilfield Project

SIPC (SINOPEC)

On Wed, Apr 23, 2014 at 5:25 PM, Hrushikesh Sangamnerkar <hrushi612@gmail.com> wrote:

Dear all,

Plate thickness 14 mm
Plate material SA 240 TYPE 304L
Joint Single V groove joint
Can I qualify welder for SS and inconel ( for F-No) in the same joint?
Weld deposited thickness 7mm (for SS ) and 7mm (for inconel).
I have heard that SS cannot be welded on Inconel but vice versa is  possible i.e. Inconel on SS.
If yes how? And if answer is No then how?
Is there any metallurgical change involved in this?

Kindly help.

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