Re: [MW:25334] Hardness Value For the P-91 and SS material.

Hardness only on HAZ of P91 is to be around 230Hv

THANKS & BEST REGARDS,

KG.PANDITHAN, IWE,  AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Tue, Aug 30, 2016 at 9:59 AM, pradip kumar Sil <pradipsil@gmail.com> wrote:

Dear Everybody,

How much is Lower & Upper  hardness limit with code reference for the weldment of  ASTM-A-335 Gr. P-91 To A312 TP 316 with filler combination ER-Ni Cr3.

Regards,

Pradip

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[MW:25333] Hardness Value For the P-91 and SS material.

Dear Everybody,

How much is Lower & Upper  hardness limit with code reference for the weldment of  ASTM-A-335 Gr. P-91 To A312 TP 316 with filler combination ER-Ni Cr3.

Regards,

Pradip

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Re: [MW:25332] AWS D1.1 & ASME SEC.IX

Dear All,

I have reminded several times that this forum is not a problem solving exchange of mails. If a matter needs a wider discussion on any aspect of codes, comparisons or interpretations, meaning and details of how to apply for a particular situation, then that subject can be brought out. 

When ever a answer is given it for all the members. So addressing to a Mr Kumar by name is incorrect.

The message shd always start with in my opinion etc or just quote the paragraph of the code referenced including exact sentence etc for easy understanding.

Even the members who are asking questions must give proper details whether it is a actual case or a discussion for acedemic interest . Relevant project code applicable, whether it is for new construction or old equipment , repair or site/shop etc.

I request all members to raise the level of this forum and make it a high standard one, so that when some one is reading he shd feel that the reply is given after careful study and is full of knowledge increasing references.......

I have heard some members complaining that individual opinions are given without references to codes/standards which may become a wrong example leading to wrong knowledge getting circulated.

Hope all members will take note and follow the discipline established.

Rgds

Prakash Gotimukul

AIS, Consultant ASME/ISO/PED/IBR

 gprakash31@gmail.com.

 Mob:+97152 979 5678

On Mon, Aug 29, 2016 at 5:00 PM, Bala Murugan <balamuruganqaqc@gmail.com> wrote:

Dear Mr Kumar.

The requirement on ASME IX not same as AWS D1.1. The variable are the most clearly different in there. For example, ASME IX mention for joint configuration park on NON ESSENTIAL VARIABLE but on AWS D1.1 is contrary.

It depends on your client!

Few reputed clients accept ASME IX WPS in place of AWS D1.1.You can convinces your client by referring to API RP 582 - 2nd Edition, Clause 4.

Before approaching your client ,please ensure API RP 582 is applicable for the project.

 

4 General Welding Requirements

4.1 Structural (nonpressure boundary) welding requirements shall comply with either AWS D1.1 or AWS D1.6.

When approved by the purchaser (engineer) welding procedures may be qualified per ASME BPVC Section IX."

Thanks,

Balamurugan

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Re: [MW:25331] AWS D1.1 & ASME SEC.IX

Dear Mr Kumar.

The requirement on ASME IX not same as AWS D1.1. The variable are the most clearly different in there. For example, ASME IX mention for joint configuration park on NON ESSENTIAL VARIABLE but on AWS D1.1 is contrary.

It depends on your client!

Few reputed clients accept ASME IX WPS in place of AWS D1.1.You can convinces your client by referring to API RP 582 - 2nd Edition, Clause 4.

Before approaching your client ,please ensure API RP 582 is applicable for the project.

 

4 General Welding Requirements

4.1 Structural (nonpressure boundary) welding requirements shall comply with either AWS D1.1 or AWS D1.6.

When approved by the purchaser (engineer) welding procedures may be qualified per ASME BPVC Section IX."

Thanks,

Balamurugan

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Re: [MW:25330] AWS D1.1 & ASME SEC.IX

No body can say they are same. It's two diff systems n codes. Need seperate qualification. However it's for client to decide if he accepts one for other?

On Aug 29, 2016 3:27 PM, "Kumar" <sk7920541@gmail.com> wrote:

Dear Experts,

Just a query regarding PQR & WPS generation. the project spec. calls
to follow PQR &
WPS  according to Sec. IX for construction of pressure vessels ( MOC-
SA 516 Gr. 70 N). complying to  to ASME Sec. VIII Div.1.

Also the allied base frame structures ( skid frame) too with the above code.
The work had been assigned to 2 diff. sub-cons & one of them made PQR
& WPS according to AWS D1.1  in order to use the welding of
structures. this was done due to the queries & enforcing of Main cont.
engineer though spec. calls for Sec. IX !

But here, one sub-con is unable to provide AWS D1.1 PQR & WPS due to
practical difficulties & says both don't have much differences.

Our doubt is that, once the mecahnical integrity of the intended weld
is proven with Sec.IX PQR, then what is the necessity to call for  AWS
D1.1 PQR, WPS etc...?

your valuable feedbacks are highly appreciated.

Thanks in advance,
kumar.

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[MW:25329] AWS D1.1 & ASME SEC.IX

Dear Experts,

Just a query regarding PQR & WPS generation. the project spec. calls
to follow PQR &
WPS according to Sec. IX for construction of pressure vessels ( MOC-
SA 516 Gr. 70 N). complying to to ASME Sec. VIII Div.1.

Also the allied base frame structures ( skid frame) too with the above code.
The work had been assigned to 2 diff. sub-cons & one of them made PQR
& WPS according to AWS D1.1 in order to use the welding of
structures. this was done due to the queries & enforcing of Main cont.
engineer though spec. calls for Sec. IX !

But here, one sub-con is unable to provide AWS D1.1 PQR & WPS due to
practical difficulties & says both don't have much differences.

Our doubt is that, once the mecahnical integrity of the intended weld
is proven with Sec.IX PQR, then what is the necessity to call for AWS
D1.1 PQR, WPS etc...?

your valuable feedbacks are highly appreciated.

Thanks in advance,
kumar.

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Re: [MW:25327] RE: 25321] Pickling and Passivation Profile View

Hi

Its better to remove the slag residues .

765

kr

DAS

On 28 August 2016 at 18:39, Alan Denney <alan@denney1.freeserve.co.uk> wrote:

Austenitic stainless steels are prone to crevice corrosion and retained slag will, most likely, provide the conditions for this to occur.

 

Alan Denney

AKD Materials Consulting Ltd

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sankar krishnan
Sent: 28 August 2016 14:15
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:25321] Pickling and Passivation Profile View

 

Dear Brothers ,

 

      I did Pickling and Passivation for SS tank , 

 

Brand Name : 

 

1) Pickling : Avesta Pickling Spray 204

2) Passivation : Avesta Finish One Passivator 630

 

Actually Now i am Facing problem of Molten Slag  Melt at settlement at Shell Plate , Please Refer Attachment file 

 

My Question Is : If the  Molten Slag not Removed From shell course means ,  will affect any  at Future corrosion  at shell area or Not , According to ASTM A380

 

 

 

Please advice me , I am waiting for your Valuable answer 

 

Best regards

Sankar.k

Welding Inspector 

Enka-Iraq

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Re: [MW:25328] Hard Facing_Stellite 6 _reg

HI

Did you use any Buffer layer prior to ST6, if not use E312 XX type electrodes as a base layer .

use stringer bead

regards

DAS

On 28 August 2016 at 22:18, Sivaraman N <nsivaraman9@gmail.com> wrote:

Dear all,

While doing Hard facing Overlay of stellite 6  on carbon steel and stainless steel  cracks observed during second layer and third layer

Base Material:SA 516 Gr 70 (15 mm thk) & SA 240 TP 316 L(15 mm thk)

Electrode:ECoCrA

Process: SMAW

Overlay thickness:6 mm

How to avoid the cracks during hard facing?

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Re: [MW:25325] Definition

Shall in codes denote a mandatory requirement.

Should denotes a recommended practice, but not required.

May denotes an option.

Must is not used too much anymore in code lexicon.
(No pun on the last one intended)

Cheers,

Balamurugan

On Mon, Aug 29, 2016 at 10:35 AM, Sundar Kumar <sunkumarshine@gmail.com> wrote:

Dear Experts ,

   Where shall, may ,must ,should meanings explained in ASME . How to interpret these verbs.

Thanks&Regards,

T.Sundar Kumar 

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[MW:25326] Hard Facing_Stellite 6 _reg

Mr Siva

How about your travel speed during welding.?


Defri


QA/QC Inspector
+6281286886600

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Re: [MW:25324] Definition

Pls find ASME 31.1 Clause 100.2

On Mon, Aug 29, 2016 at 10:05 AM, Sundar Kumar <sunkumarshine@gmail.com> wrote:

Dear Experts ,

   Where shall, may ,must ,should meanings explained in ASME . How to interpret these verbs.

Thanks&Regards,

T.Sundar Kumar 

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[MW:25323] Definition

Dear Experts ,

   Where shall, may ,must ,should meanings explained in ASME . How to interpret these verbs.

Thanks&Regards,

T.Sundar Kumar 

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[MW:25321] Hard Facing_Stellite 6 _reg

Dear all,

While doing Hard facing Overlay of stellite 6  on carbon steel and stainless steel  cracks observed during second layer and third layer

Base Material:SA 516 Gr 70 (15 mm thk) & SA 240 TP 316 L(15 mm thk)

Electrode:ECoCrA

Process: SMAW

Overlay thickness:6 mm

How to avoid the cracks during hard facing?

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[MW:25322] RE: 25321] Pickling and Passivation Profile View

Austenitic stainless steels are prone to crevice corrosion and retained slag will, most likely, provide the conditions for this to occur.

 

Alan Denney

AKD Materials Consulting Ltd

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sankar krishnan
Sent: 28 August 2016 14:15
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:25321] Pickling and Passivation Profile View

 

Dear Brothers ,

 

      I did Pickling and Passivation for SS tank , 

 

Brand Name : 

 

1) Pickling : Avesta Pickling Spray 204

2) Passivation : Avesta Finish One Passivator 630

 

Actually Now i am Facing problem of Molten Slag  Melt at settlement at Shell Plate , Please Refer Attachment file 

 

My Question Is : If the  Molten Slag not Removed From shell course means ,  will affect any  at Future corrosion  at shell area or Not , According to ASTM A380

 

 

 

Please advice me , I am waiting for your Valuable answer 

 

Best regards

Sankar.k

Welding Inspector 

Enka-Iraq

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[MW:25321] Pickling and Passivation Profile View

Dear Brothers ,

      I did Pickling and Passivation for SS tank , 

Brand Name : 

1) Pickling : Avesta Pickling Spray 204

2) Passivation : Avesta Finish One Passivator 630

Actually Now i am Facing problem of Molten Slag  Melt at settlement at Shell Plate , Please Refer Attachment file 

My Question Is : If the  Molten Slag not Removed From shell course means ,  will affect any  at Future corrosion  at shell area or Not , According to ASTM A380

Please advice me , I am waiting for your Valuable answer 

Best regards

Sankar.k

Welding Inspector 

Enka-Iraq

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Re: [MW:25320] FW: 25315] RE: 25313] RE: Re: % Ferrite & FN measurements of Duplex Stainless steel welds

Gents,

 

In addition to Mr. Herman Pieper & Mr Pradip Goswami comments, I would like to add few points.

 

In Middle East, few reputed clients spec requires, "the PREN of the filler metal, as calculated from the batch test certification, should be at least 2 units higher than the minimum specified for the base material to be welded"

 

Meeting the above requirement using ER2209 to weld UNS S31803 is always difficult, unless filler metal is procured accordingly. So manufacture directly recommends using ER 2507/ER2594 in place of ER 2209, which is not really appreciated in terms of cost and high amount of intermetallic formation will be there in the weld, which inturn increases the hardness of the weld.

 

Qualifying UNS S31803 PQRs using ER 2209 filler wire with stringent corrosion test like ASTM G48 Method A, is not that difficult these days, if proper precautions like purging gas selection, heat input control, interpass temp control are made appropriately.

 

As Mr. Pradip stated, using ER 2594 only for root pass and further passes with ER2209 will work good by having a higher PREN in the root side (i.e. process side in case of process piping/pipeline) and hardness values well within the acceptance limits as required.

Regards,

Sudhakar K

On Sat, Aug 27, 2016 at 7:18 AM, pgoswami <pgoswami@quickclic.net> wrote:

Hi Herman & Mohammed,

 

Certain specifications have very stringent requirements with respect to Corrosion Testing  for DSS and SDSS. However there should not be any compelling reason to use SDSS 2594 consumable for the complete joint when the base metal is UNS 31803.

 

Below are extracts from SAES-W-016:- 2009 Version: Clause

 

2014 Version same clause is replaced by:-

 

In fact  filler metals  for 2507 (ER 2594) could generate more intermetallics than the matching filler for UNS 31803, i.e ER-2209

 

Attachd is the discussion , which took place in Eng-tips forum,theissue was meeting the pitting corrosion  requirements as per SAES-W-016 at the weld root. An advice to use ER 2594 for the root pass followed by ER2209 for the rest was proved to be a success.

 

Aprpeciate your thoughts.

 

Thanks.

 

Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Engineering Specialist ,

Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgoswami@quickclic.net

pradip.goswami@gmail.com

H-905-6799677, 905-9631505

C-905-9793232

 

***********************************************************************************************************************************************************************************

Dear Mr. Pradip,

 

Many thanks for your valuable suggestion and references.

 

It was suggested by Consumable manufacturer to use Super duplex filler metal as we were unable to pass corrosion test required by SAES-W-016.

 

Regards,

Mohammed Azharuddin

 

***************************************************************************************************************************************************************************************

---

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Pieper QSI
Sent: Thursday, August 25, 2016 7:11 AM
To: materials-welding@googlegroups.com
Subject: [MW:25315] RE: 25313] RE: Re: % Ferrite & FN measurements of Duplex Stainless steel welds

 

Dear Pradip,

 

I think Mr. Azharuudin is working according to a Shell or Total specification (or other oil company), some of those specifications require Super Duplex Filler metal for the root pass.

 

Met vriendelijke groeten / Best Regards,

 

Herman Pieper

QA-QC Inspector / CSWIP + IWI-C Welding Inspector / IWT / Materials Expert

 

Job van der Havestraat 6

8384 DB, Wilhelminaoord

Cell: +31 6 51691215

 

 

Van: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] Namens pgoswami
Verzonden: donderdag 25 augustus 2016 05:32
Aan: humaidazhar@gmail.com
CC: materials-welding@googlegroups.com
Onderwerp: [MW:25313] RE: Re: % Ferrite & FN measurements of Duplex Stainless steel welds

 

Mr Azharuudin,

 

Your client is correct. The established formula for conversion is : % Ferrite= 0.7 x Ferrite No(FN)  or FN= 1.4 X % Ferrite.

 

Please see the highlighted texts in the attached documents of Fisher Ferrito scope for your information. Up to 28-30  abstract values both FN & % Ferrite runs equal. At higher values the FN is more in number that %Ferrite.

 

If you look at the ferritoscope MP-30  training document, when you plot the lines intersecting the centerline of the curve(Page-4), it's clearly visible at higher % Ferrite values, the numerical values of  Ferrite No(FN) is more.

 

Also it would be advisable to cross check the Lab reading (computed as per ASTM E-562) with Fisher Ferrito scope also.  As claimed in the  Ferrito scope catalogue(marked with a arrow)  results could be correlated both in % Ferrite  7 Ferite No.

 

Use these information to straighten out the calculation and get your PQR through.

 

Also a question, what prompted you use Super Duplex Welding filler wire for DSS UNS-31803??  Appreciate  your response.

 

Thanks.

 

 

Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist ,
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299

pgoswami@quickclic.net

pradip.goswami@gmail.com

 

 .

---

From: Pradip Goswami [mailto:pradip.goswami@gmail.com]
Sent: Wednesday, August 24, 2016 9:49 AM
To: Anasua Goswami
Subject: Fwd: Re: % Ferrite & FN measurements of Duplex Stainless steel welds

 

---------- Forwarded message ----------
From: "Mohammed Azharuddin" <humaidazhar@gmail.com>
Date: Aug 24, 2016 3:19 AM
Subject: Re: % Ferrite & FN measurements of Duplex Stainless steel welds
To: "Pradip Goswami" <pradip.goswami@gmail.com>
Cc:

Dear Mr. Pradip,

 

Please see attached client specification.

 

We reported ferrite in both vol% and FN value.But the correlation what client is asking ( 70% FN VALUE= VOL% FERRITE ) we are unable to get it.Moreover it is a thumb rule I believe.

 

Thanks

Mohammed Azharuddin

 

On 23 August 2016 at 19:39, Pradip Goswami <pradip.goswami@gmail.com> wrote:

Could you scan and email the entire spec.Your client is correct asking ferrite to be reported in volume or % ferrite. Thx

 

On Aug 23, 2016 12:29 AM, "Mohammed Azharuddin" <humaidazhar@gmail.com> wrote:

Reported values and client comments attached

 

I believe that 70%FN = VOL% FERRITE is a rule of thumb [pgoswami] --- This is not a rule of thumb. This conversion is arrived at after conducting numerous tests and correlations of numerous data on weld  ferrite content.

 

Actual correlation must be established from the measurements during PQR qualification

 

 

 

These readings are wrong. Please see the explanations above.

 

 

On 23 August 2016 at 07:25, Mohammed Azharuddin <humaidazhar@gmail.com> wrote:

Dear Experts,

 

We have performed qualification on Duplex stainless steel BM UNS 31803 welded to itself with filler ER2594. Shielding gas AR+2% nitrogen

 

Ferrite measurements of welds were carried out as per ASTM E562 and AWS A4.2.

 

Client has rejected these values as the correlation is not appropriate.See below reported values and client comment.

 

From client point of view ,It should have been like VOL % FRRITE = 70% FN VALUE.

 

Your valuable advise will help us to save this WPS from being rejected.

 

Many Thanks

 

Regards,

Mohammed Azharuddin

 

 

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