Filler wire for C12A with WC9

[Vadivel Mahadevan]

Dear Experts,

 

I need to weld P15E(C12A/P91 - High alloy steel) material with P5A(WC9/P22 - Low alloy steel).

Can you please guide me on MIG Filler wire that needs to used for this combination.

 

Thanks and regards

Vadivel. M

[george....@gr.bureauveritas.com]

I would not recommend MIG for low alloy steels (P22 is also low alloy)
Would be better combination of GTAW and SMAW.
What is your thickness?
What is your construction Code / Standard?

best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor


I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS

Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)

Vadivel Mahadevan ---10/09/2014 06:48:12---Dear Experts,

 

Thanks and regards

Vadivel. M

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[Vadivel Mahadevan]

Sir,

I will take up your suggestion. I have GTAW also.

It is a fillet joint and it varies from 8mm to 20mm.

ASME Sec.IX is the code I need to refer.

Regards

Vadivel. M

 

Thanks and regards

Vadivel. M

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[george....@gr.bureauveritas.com]

ASME IX is the qualification Code and not the construction Code.
What is the constuction Code? ASME I?, ASMEVIII-1? other?
What is the throat thickness of the fillet welds?
You are dealing with pressure retaining welds? Seal welds?

I am asking that to check if you need PWHT because of P22.

For P91 you need always PWHT whatever the thickness is.

If you do not need PWHT for P22, then you butter the P91 item with a filler  for P22, you perform PWHT with the parameters for P91 and then you weld the P22 item with a filler  for P22.

For filler materias check in SFA 5.5 (SMAW) and in SFA 5.28 (GTAW)

best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor


I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS

Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)

Vadivel Mahadevan ---10/09/2014 10:51:43---Sir, I will take up your suggestion. I have GTAW also.

From: Vadivel Mahadevan <vadivel...@gmail.com>
To: material...@googlegroups.com
Date: 10/09/2014 10:51
Subject: Re: [MW:21846] Filler wire for C12A with WC9
Sent by: material...@googlegroups.com

---

Sir,
I will take up your suggestion. I have GTAW also.
It is a fillet joint and it varies from 8mm to 20mm.
ASME Sec.IX is the code I need to refer.
Regards
Vadivel. M

On Wednesday, September 10, 2014 11:52:18 AM UTC+5:30, George Dilintas wrote:

I would not recommend MIG for low alloy steels (P22 is also low alloy)
Would be better combination of GTAW and SMAW.
What is your thickness?
What is your construction Code / Standard?
best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor


I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS

Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
(See attached file: Dilintas_George.vcf)

Vadivel Mahadevan ---10/09/2014 06:48:12---Dear Experts,

From: Vadivel Mahadevan <vadivel...@gmail.com>
To: material...@googlegroups.com
Date: 10/09/2014 06:48
Subject: [MW:21834] Filler wire for C12A with WC9
Sent by: material...@googlegroups.com


---




Dear Experts,

I need to weld P15E(C12A/P91 - High alloy steel) material with P5A(WC9/P22 - Low alloy steel).

Can you please guide me on MIG Filler wire that needs to used for this combination.

 

Thanks and regards

Vadivel. M

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[Vadivel Mahadevan]

Sir,

Regret, I refer to Sec.VIII Div.I

Throat thickness 6mm to 10mm. It is a socket weld.

Which is the suitable filler for this combination?

 

Thanks and regards

Vadivel. M

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[rajesh s. mhaske ,Engineer Welding ,PUNE,INDIA]

Dear sir
   use GTAW : ER90S-B3 , PWHT  720-730 , 2 hrs or
   GTAW +SMAW : ER90S-B3+E9018-B3 , PWHT  720-730 , 2 hrs or
   GTAW +FCAW : ER90S-B3+E91T1-B3  , PWHT  720-730 , 2 hrs

[Vadivel Mahadevan]

Sir,

Regret, I need to refer to ASME VIII Div.1.

It is a socket weld fitup of 6mm to 11mm throat.

can you please advise the compatible filler wire for this combination.

 

Regards

Vadivel. M

 

Thanks and regards

Vadivel. M

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[Amitabha.B...@voestalpine.com]

Hi Vadivel,

 

For Dissimilar joints e.g  Gr 91 to Gr 22  -I would recommend filler alloy suitable for  SMAW process. Please review the attached product data-sheet.

 

I’m not sure  whether you are interested in welding casting/forging  to plates/Pipes.  Gr 91 & Gr22 base materials are of  dissimilar in chemistry & also designed  for specific applications. Due to varied Chromium(Cr) content C-diffusion occurs producing de-carburized zone with loss of strength & properties.

 

Hence,  newer bainitic filler alloys (as per attached PDS- available in SMAW & GTAW fillers)have been developed containing Special carbide forming elements (V, Nb and/or Ti)-thus Carbon diffusion is minimized severely. For successful  joining , correct welding parameters ,procedure &  heat cycle  needs to be  applied.

 

Thanks

 

With Regards

Amitabha Bhattacharya

Head - Application Technology

 

voestalpine Bohler Welding India Pvt. Ltd.

voestalpine Bohler Application Technology Centre

A-140, Metropolitan, ground floor

Road no. 23, Wagle Industrial Estate

Thane – 400604, India

T. +91-22-2582 8855

F. +91-22-2857 4445

M. +91-98 33998246

amitabha.b...@voestalpine.com

www.voestalpine.com/welding

voestalpine – One step ahead

 

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Vadivel Mahadevan
Sent: Tuesday, September 09, 2014 6:11 PM
To: material...@googlegroups.com
Subject: [MW:21834] Filler wire for C12A with WC9

 

Dear Experts,

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[Vadivel Mahadevan]

Thanks Mr. Rajesh,

I have gone through the chemical composition of ER90S-B3, but it is likely to match 2 1/2 Cr. alloy steels. Will it be compatible for 9 Cr. steel?

Regards

Vadivel. M

[rajesh s. mhaske ,Engineer Welding ,PUNE,INDIA]

Dear sir
         YES, Weld of  ER90S-B3+E9018-B3  temperature around 720-730°C (1330-1345°F), for 2 hours,  this temp is
sufficient to temper the P91 HAZ without over-tempering the P22,

[george....@gr.bureauveritas.com]

Do not forget that section VIII-1 requires PWHT for Pno 15E
Best regards
Dr Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

HBS Regional Technical Manager

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[Vadivel Mahadevan]

Dear Rajesh,

Please don't mistake me..

What will be the effect if I use ER90S-B9(compatible to C12A) instead of ER90S-B3, because I readily have that filler wire at my shop and also the chemistry will match the Higher one.

Regards

Vadivel. M

[Arumugam Dinesh Kumar]

Gentleman ,

Use ERNiCrMo-3, even if the joint requires heat treatment no metallurgical reaction will take place in
Inconel weldment which will reduce mechanical properties of weldment.

Regards
Dinesh

On Wed, 10 Sep 2014 09:18:04 +0530 Vadivel Mahadevan wrote
>Dear Experts,I need to weld P15E(C12A/P91 - High alloy steel) material with P5A(WC9/P22 - Low alloy

steel).
Can you please guide me on MIG Filler wire that needs to used for this combination.Thanks and

regardsVadivel. M

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[rajesh s. mhaske ,Engineer Welding ,PUNE,INDIA]

Dear Vadivel,
First is that the Gr 22 socket shall not be designed on Gr 91 pipe .
But due to design constraints , if the combination comes, following shall be thought -
 
Use of either Type-B9 OR  Type-B3  is acceptable for dissimilar welds between Gr 91-Gr 22.
When we use Type-B9 filler , the PWHT would be 750 + 10 /-0  Deg C , - 2 HRS minimum so as to temper  B9 weld as well as HAZ of Gr 91 .

When we use Type-B3 filler , the PWHT would be 740 + 10 /-0  Deg C , - 2 HRS minimum so as to temper the HAZ of Gr 91 .

This is the thought .

Also , the experience has proved that Type-B3 filler metal and PWHT of  740 + 10 /-0  Deg C , - 2 HRS 
  has given satisfactory  boiler service .And Gr 22 base metal is not getting degraded due to the above PWHT Temperature .

It is clear that both Type B9  and Type -B3  works satisfactory and impose no issue

Vishwas Keskar
Welding Manager- Metallurgist

[in...@pieper-qsi.nl]

Dear Madam / Sir,

Thank you for your e-mail but unfortunately I’m out of office till September 22. I don’t have access to my e-mail account during this period and therefore can’t answer and /or react on any e-mail.
If necessary I will reply a.s.a.p. after I’m back in my office.

Best Regards,

Herman Pieper

[Kannayeram Gnanapandithan]

do not use NiCrMo3, hope people have not experienced in P91 welding??

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

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[Kannayeram Gnanapandithan]

Gr 22 On Gr 91 is common and both are compatible , if we use B3, Chromium depletion/Carbon migration may not be there in Gr22 side material. We can go down  SR upto 705 degree Celsius when we use Cr content wire less than 3%

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[pras ari]

Dear Sirs,

1 .What is your material type design for main line? P22 or P91.
2. if P91, you can dissimilar material between P22 to P91, the filler metal GTAW ER90S-B9 and SMAW E9015-B9 (E9018-B9) 
3. TIG weld between P22 and P91 with inconel 625, It is recommended that postweld heat treatment at 750°C for 2 hours is the proper condition to reduce the hardness of heat affected zone (HAZ) of P91 steel.

Winarko
QA/QC WI BNSP

[in...@pieper-qsi.nl]

[Kannayeram Gnanapandithan]

iN THIS REGARD THERE IS VERY GOOD ARTICLE AVAILABLE IN  EPRI

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[pgoswami]

Hi,Vadivel Mahadevan,

 

The selection of welding consumable may correspond either to Grade 91 steel or Grade 22 steel (depending on the application, component being welded).DMW's involving Grade91 steel are always tricky as chances of failures are always there.

 

Many welding engineers  prefer stronger welds for DMW's involved in supercritical power plants.The rationale " failure of welds" are more common than BMs". Hence  grade 91  consumable is often recommended say for High Temperature Piping, Super heater tubes where DMW's are involved between grade-91 and grade 22 steel.

 

Consumables matching grade 22 steel are generally recommended with good degree of conservatism (as described in the attachment). However chances failures is service for  grade 22 welds are always there if the design temperature is  above 500 Deg C.

 

If required alteration of welding technique(e.g buttering grade-91 with grade 22 electrode+PWHT ) followed by full welding +another PWHT would be better recommendation.

 

Please see this attachment for general guidance.

 

Thanks

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Specialist

Ontario, Canada

pgos...@quickclic.net

pradip....@gmail.com

http://ca.linkedin.com/pub/pradip-goswami/5/985/299

 

---

From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of george....@gr.bureauveritas.com
Sent: Thursday, September 11, 2014 10:39 AM
To: materials-welding
Subject: Re: [MW:21875] Filler wire for C12A with WC9