--You can use E309Mo but ensure that A106 Gr B application at -40 Deg.C when impact is required (CS HAZ and CS BM side.) Why don't you consider SA 333 Gr 6?
Regards,
Vasanth
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of babu k
Sent: 30 December 2009 16:28
To: materials-welding@googlegroups.com
Subject: [MW:3925] Filler metal SS316 to ASTM A106 Gr.B
Hi gents,
On the basis of metallurgical point of view, is there any effect of choosing E309Mo as the filler metal for the above combination of base metal.
Service temp is minus 40 (Max.)
Regards,
K.Babu,
Singapore
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You can use E309Mo but ensure that A106 Gr B application at -40 Deg.C when impact is required (CS HAZ and CS BM side.) Why don’t you consider SA 333 Gr 6?
Regards,
Vasanth
From:
Sent: 30 December 2009 16:28
To:
Subject: [MW:3925] Filler metal SS316 to ASTM A106 Gr.B
Hi gents,
On the basis of metallurgical point of view, is there any effect of choosing E309Mo as the filler metal for the above combination of base metal.
Service temp is minus 40 (Max.)
Regards,
K.Babu,
--
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What is the basic difference between Boiler quality steel and Structural quality steel.
Can we use Structural quality steel if it passes all test of ASME?
Best Regards,
Sunil Agrawal
Yes, you can send for RT and Bend test. We have done so many welders qualification under this specification and faced few problems like below.
Note: This situation is bit different from ASME Sec IX QW 306 in which the weld metal is deposited by the welder or welders by pass/layer over another pass/layer. Whereas, the below situation is entirely different. We have convinced PDO to proceed further.
Regards,
Vasanth
From:
Sent: 31 December 2009 07:22
To:
Subject: [MW:3928] Welder Qualification
Dear all,
Here we have a situation,
1) welder qualification conducted on 24" pipe as per Sec IX and client requirement(PDO SP-1096) with two welders welding from opposite sides( one welder welds the half portion and the other half by another welder).
2) RT accepted for 1st half of the portion, but the other half fails to meet the requirement.
Question: Whether the test coupon shall be sent for bend testing to qualify the welder who welded the first half?
NB:RT & Bend test required as per Client requirement.
Regards
Roshan
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What is the basic difference between Boiler quality steel and Structural quality steel.
Can we use Structural quality steel if it passes all test of ASME?
Best Regards,
Sunil Agrawal
Hi gents,On the basis of metallurgical point of view, is there any effect of choosing E309Mo as the filler metal for the above combination of base metal.Service temp is minus 40 (Max.)Regards,K.Babu,Singapore--
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Dear Roshan
As per Sex IX, QW306 Combination of Welding Processes
“Failure of any portion of a combination test in a single test coupon constitutes failure of entire combination”
So if one welder out of two is failed, when the test is conducted in single test coupon then the entire test is considered as fail / fail to meet the requirements of Sec IX.
Thank you
Regards
Harikumar.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of roshan shan
Sent: Thursday, December 31, 2009 9:22 AM
To: materials-welding@googlegroups.com
Subject: [MW:3928] Welder Qualification
Dear all,
Here we have a situation,
1) welder qualification conducted on 24" pipe as per Sec IX and client requirement(PDO SP-1096) with two welders welding from opposite sides( one welder welds the half portion and the other half by another welder).
2) RT accepted for 1st half of the portion, but the other half fails to meet the requirement.
Question: Whether the test coupon shall be sent for bend testing to qualify the welder who welded the first half?
NB:RT & Bend test required as per Client requirement.
Regards
Roshan
--
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Dear GroupGood day,--------------------------------------------------------------------------------------------------------------------------------Still I have confusion on WPS and PQR terms.1. WPS to be created first , with respect to selection of process, electrode and current etc.2. PQR is developed after WPS ,by entering the the actual variation relevant to the WPS.|Corresponding reference numbers are to be entered in each other.This is the information from ASME IX codes.--------------------------------------------------------------------------------------------------------------------------But there is a controvercial statement from some of our colleques, PQR to be developed first and Supporiting PQR reference number is to be entered in the WPS.Please clarify this confusion .mahendraKSA
Can any one suggest about the Strip lamiflex Material Hayness Alloy 25 used as one of the parts shown in the Breechlock type exchangers installed at our unit ?
Kindly share the purpose of these strips and also alternative material.
TQ.
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Dear GroupGood day,--------------------------------------------------------------------------------------------------------------------------------Still I have confusion on WPS and PQR terms.1. WPS to be created first , with respect to selection of process, electrode and current etc.2. PQR is developed after WPS ,by entering the the actual variation relevant to the WPS.|Corresponding reference numbers are to be entered in each other.This is the information from ASME IX codes.--------------------------------------------------------------------------------------------------------------------------But there is a controvercial statement from some of our colleques, PQR to be developed first and Supporiting PQR reference number is to be entered in the WPS.Please clarify this confusion .mahendraKSA
Fereidoun
mahen dran
<cbemahendar@yaho
o.com> To
Sent by: materials-welding@googlegroups.com
materials-welding cc
@googlegroups.com
Subject
[MW:3917] WPS & PQR clarification
12/30/2009 04:31
PM
Please respond to
materials-welding
@googlegroups.com
Dear Group
Good day,
--------------------------------------------------------------------------------------------------------------------------------
Still I have confusion on WPS and PQR terms.
1. WPS to be created first , with respect to selection of process,
electrode and current etc.
2. PQR is developed after WPS ,by entering the the actual variation
relevant to the WPS.
|Corresponding reference numbers are to be entered in each other.
This is the information from ASME IX codes.
--------------------------------------------------------------------------------------------------------------------------
But there is a controvercial statement from some of our colleques, PQR to
be developed first and Supporiting PQR reference number is to be entered
in the WPS.
Please clarify this confusion .
mahendra
KSA
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Regards,
On 12/30/09, mahen dran <cbemahendar@yahoo.com> wrote:
> Dear Group
>
> Good day,
> --------------------------------------------------------------------------------------------------------------------------------
> Still I have confusion on WPS and PQR terms.
>
> 1. WPS to be created first , with respect to selection of process,
> electrode and current etc.
> 2. PQR is developed after WPS ,by entering the the actual variation
> relevant to the WPS.
>
> |Corresponding reference numbers are to be entered in each other.
>
> This is the information from ASME IX codes.
> --------------------------------------------------------------------------------------------------------------------------
> But there is a controvercial statement from some of our colleques, PQR to
> be developed first and Supporiting PQR reference number is to be entered
> in the WPS.
>
> Please clarify this confusion .
>
>
> mahendra
> KSA
>
>
>
>
> --
> To post to this group, send email to materials-welding@googlegroups.com
> To unsubscribe from this group, send email to
> materials-welding-unsubscribe@googlegroups.com
> For more options, visit this group's bolg at
> http://materials-welding.blogspot.com/
> The views expressed/exchnaged in this group are members personel views and
> meant for educational purposes only, Users must take their own decisions
> w.r.t. applicable code/standard/contract documents.
>
--
Sukamal
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--Dear GroupGood day,--------------------------------------------------------------------------------------------------------------------------------Still I have confusion on WPS and PQR terms.1. WPS to be created first , with respect to selection of process, electrode and current etc.2. PQR is developed after WPS ,by entering the the actual variation relevant to the WPS.|Corresponding reference numbers are to be entered in each other.This is the information from ASME IX codes.--------------------------------------------------------------------------------------------------------------------------But there is a controvercial statement from some of our colleques, PQR to be developed first and Supporiting PQR reference number is to be entered in the WPS.Please clarify this confusion .mahendraKSA
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Hi, in my opinion...first you will make a preliminary or proposed pWPS and as per the mentioned variables( please note that VARIABLES, which means they can vary) you will make test coupon. In PQR you will enter the actual (range) values which you will get during the PQR run. and if all the required tests are passed, the pWPS will be amended and it becomes the actual WPS. If you run the PQR first, I can ask you a question " Which procedure you are going to qualify?" regards, Nandesh --- On Wed, 30/12/09, mahen dran <cbemahendar@yahoo.com> wrote:
|
--I have material with 80mm thickness and it's known that RT is not applicable for application as NDT, so what is the substitute method for NDT and please give me the code case number for that?
Note1: the applied code ia ASME VIII Div II
Note2: If the substitute NDT is UT with permanent record but also it's difficult to get it what is substitute to get NDT with permanent record????
Eng/Mostafa Kamel
Senior Welding Engineer
SIEMENS
+20104410009
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--I have material with 80mm thickness and it's known that RT is not applicable for application as NDT, so what is the substitute method for NDT and please give me the code case number for that?
Note1: the applied code ia ASME VIII Div II
Note2: If the substitute NDT is UT with permanent record but also it's difficult to get it what is substitute to get NDT with permanent record????
Eng/Mostafa Kamel
Senior Welding Engineer
SIEMENS
+20104410009
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I have material with 80mm thickness and it's known that RT is not applicable for application as NDT, so what is the substitute method for NDT and please give me the code case number for that?
Note1: the applied code ia ASME VIII Div II
Note2: If the substitute NDT is UT with permanent record but also it's difficult to get it what is substitute to get NDT with permanent record????
Eng/Mostafa Kamel
Senior Welding Engineer
SIEMENS
+20104410009
Pls. note that addenda 09 of ASME section II part A now made it mandatory to use SA 965 in place of SA 336 for austenitic forgings.
Cl. 1.3 of SA 965 in ASME section II part A mentions the same.
S. Banerjee
Static Equipment Department (STEQU)
Tecnimont ICB House, Chincholi Bunder, 504,
Tel : + 91-22-6777 7029/ Fax : +91-22-6694 5599
E-mail : s.banerjee@ticb.com
Website : www.ticb.com
From:
Sent: Wednesday, December 30, 2009 10:46 AM
To:
Subject: [MW:3914] Non-standard austenitic SS forgings_SA 336 Vs SA 965
Further to below mail, I also come across a case where client ask for SA 965 for non-standard austenitic SS forgings. However, our normal practice is to adopt SA 336 material for non-standard austenitic SS forgings.
Can any one guide me when to use SA 965 inplace of SA 336? Difference between them? Is there any code interpretation?
Best Regards,
Sunil Agrawal
Tecnimont ICB
From: pgoswami@sympatico.ca [mailto:pgoswami@sympatico.ca]
Sent: Thursday, December 03, 2009 9:10 AM
To:
Cc:
Subject: FW: [MW:3786] Tube sheet material for LTCS application SA350 Vs SA765
Dear Forum Members,
I made a quick comparison between the above materials.
SA-350 Gr.LF2 is generally used for low temperature applications for forgings for forged or ring-rolled flanges, forged fittings and valves where notch toughness (Charpy Impact) testing is required, and had been a very well acceptable material for many years.
SA-765 Gr.2 is similar in content to SA-350 Gr.LF2, except that this specification was developed specifically for various forging components tube sheets, covers, channel barrels, integral forged channels, rings, nozzles, flanges,and similar parts..
For forged componenets,e.g a tube sheet, channel barrells etc and others the correct and probably the most recent specification should be SA-765 Gr.2.
In lieu of SA-765 Gr.2., SA 350LF2 is very well acceptable. SA 350LF2 generally have a proven history in low temperature services.
Appreciate answers from the others.
Thanks
Pradip Goswami
Welding and Metallurgical Engineer/Specialist.
Subject: [MW:3780] Tube sheet material for LTCS application SA350 Vs SA765
Date: Tue, 1 Dec 2009 16:03:00 +0530
From: R.Bathula@ticb.com
To:
I have come across few client specifications where SA350 LF2 is prohibited for use as tube sheet/non std flange material (MDMT -29 to -48 °C), instead SA765 Gr II is selected.
Apart from the scope of SA765, which clearly indicates it is for use as non standard forgings, such as tubes sheets, barrels etc, where SA 350 is silent on this part
It is common to use SA350 LF2 as tube sheet material, and as large dia vessel body flanges (not covered by ASME B16.5/16.47), and never had any problem interms of weldability or toughness etc.
Any views or failure of SA 350 LF2, if anybody come across please share.
--
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
Further to below mail, I also come across a case where client ask for SA 965 for non-standard austenitic SS forgings. However, our normal practice is to adopt SA 336 material for non-standard austenitic SS forgings.
Can any one guide me when to use SA 965 inplace of SA 336? Difference between them? Is there any code interpretation?
Best Regards,
Sunil Agrawal
Tecnimont ICB
From: pgoswami@sympatico.ca [mailto:pgoswami@sympatico.ca]
Sent: Thursday, December 03, 2009 9:10 AM
To:
Cc:
Subject: FW: [MW:3786] Tube sheet material for LTCS application SA350 Vs SA765
Dear Forum Members,
I made a quick comparison between the above materials.
SA-350 Gr.LF2 is generally used for low temperature applications for forgings for forged or ring-rolled flanges, forged fittings and valves where notch toughness (Charpy Impact) testing is required, and had been a very well acceptable material for many years.
SA-765 Gr.2 is similar in content to SA-350 Gr.LF2, except that this specification was developed specifically for various forging components tube sheets, covers, channel barrels, integral forged channels, rings, nozzles, flanges,and similar parts..
For forged componenets,e.g a tube sheet, channel barrells etc and others the correct and probably the most recent specification should be SA-765 Gr.2.
In lieu of SA-765 Gr.2., SA 350LF2 is very well acceptable. SA 350LF2 generally have a proven history in low temperature services.
Appreciate answers from the others.
Thanks
Pradip Goswami
Welding and Metallurgical Engineer/Specialist.
Subject: [MW:3780] Tube sheet material for LTCS application SA350 Vs SA765
Date: Tue, 1 Dec 2009 16:03:00 +0530
From: R.Bathula@ticb.com
To:
I have come across few client specifications where SA350 LF2 is prohibited for use as tube sheet/non std flange material (MDMT -29 to -48 °C), instead SA765 Gr II is selected.
Apart from the scope of SA765, which clearly indicates it is for use as non standard forgings, such as tubes sheets, barrels etc, where SA 350 is silent on this part
It is common to use SA350 LF2 as tube sheet material, and as large dia vessel body flanges (not covered by ASME B16.5/16.47), and never had any problem interms of weldability or toughness etc.
Any views or failure of SA 350 LF2, if anybody come across please share.
--
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Stainless steel austenitic grades are susceptible to stress corrosion
cracking because of their Ni% content (range between 10 - 30%). You
should substitute the 304 for a duplex grade (like 2205) or a nickel
alloy, following recommendations of Mrs. Bagchi.
The presence of Cl / F (a few mg / l) will increase the probability of
pitting corrosion mech; These mechanisms (pitting and scc) acting
together represent a very severe operating condition. Molybdenum
alloys have best pitting resistance (eg.: 316L has 2-3% Mo and its
PREN ranges 24 versus 18 of 304).
A think you should check the presence of halogens again.
Note: PREN - Pitting resistance equivalent number (higher is better).
On Dec 21, 3:09 am, snbag...@aol.in wrote:
> Dear
> ENG. Ryiad Alzoubi
> A simpler and cost effective solution could be to electro-plate or (better) clad the inside surface of the bellows with nickel or clad with Monel/Inconel type corrosion resistant alloys. For more options and details, you can contact me at snbag...@ymail.com.
>
> Regards,
> S.N.Bagchi.
>
> -----Original Message-----
> From: Tirumala B N Tagore <tagore....@gmail.com>
> To: materials-welding@googlegroups.com
> Sent: Sun, 20 Dec 2009 11:26 pm
> Subject: Re: [MW:3856] Stress Corrosion Cracking in expansion joints
>
> 1.Expansion joints lateral deflections are to be verified whether they are in range. Axial expansions are normally catered. Lateral deflections do have confined limitations.
> In the first stage you need to examine at least one expansion joint for metallurgical evaluation.
>
> 2.since the failure is noticed from inside to outside, please look in to steam being handled (inside fluid) whether it has some traces of Chloride as well as sulphur compounds.
>
> 3.Normally expansion joints can have some condensates collected during turn arounds and / or during some process upsets and this collected condensate , if with chloride / sulphide , then you have this problem . However you can suspect this if failure is at bottom portion on horizontal lines.If this is the case, you may mitigate the next failure if drain connections are provided.
>
> 4. SS duplex or Incoloy Expansion bellows to be choosen , when you can replace in stages. for duplex, you MUST establish that the root cause is stress corrosion cracking only.
> Tagore
>
> On Sun, Dec 20, 2009 at 4:45 AM, rzoubi <rzo...@just.edu.jo> wrote:
>
> Dear Forum Members,
>
> We have consructed a high temperature hot water disrict heating system early in the year 2000,the initial insallation of the system was not so good -there were some axial and lateral deflection in the system- .The expansion joints are made fromS.S304,after 3 to 4 years of operation ,we noticed cracks in the bellows ,starting from inside to outside the layers(9 layers).When refering this prblem to some experts in our country, they called it stress corrosion cracking related to chloride content in the sarrounding envr..W e asked an expert to ckeck the presence of chloride in the envr., he found no traces of this gas.As we have no budget to replace all the expansion joints in the future,we are obliged to replace the defected exp.joint when the joint starts to leak.In order to vercome this problem we are thinking to paint these joints with a high temp. resisiting paint up to 200degree c,as the max.operating temp. is 150degree.(the operating pressure is around 20 bar).
> Plase advise whether this idea is right,if not please give us another solution.
>
> Thank you in advance
> ENG.RIYAD ALZOUBI
>
> --
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>
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Hi Vinit, Good decision.... You can go directly 3.2 (Senior Certified Welding Inspector), provided you have to show atleast 05 years documented experience related to inspection. I strongly advice you to go for CSWIP 3.1(Welding Inspector ) first and aquire 02 years' experience and do 3.2. FOR MORE DETAILS VISIT WWW.CSWIP.COM AND WWW.TWI.CO.UK REGARDS, Nandesh Kumar A --- On Sun, 27/12/09, saqib jalal <sakib321@gmail.com> wrote:
|
