Materials & Welding

Can anybody please tell me what is the minimum required dimensions of test piece for the qualification of welders in 6G as per API 1104    -- - Sreejith Nair- -- 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.

Hi Vasanth,   We have specially ordered material of ASTM A106 Gr.B at -40 Deg Cel.   More over, -40 is the max temp may encountered otherwise the normal working temp is only -20 deg cel in my case.   Regards,   K.Babu     On Thu, Dec 31, 2009 at 3:51 PM, Chandra, Vasanthan (Lagos) < Vasanthan.Chandra@deltaafrik.com > wrote: 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,   ...

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   -- 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 ...

What type of steel it is? is it specified in UCS 23? , you may use steels like SA36, SA283 Gr A/B/C, provided conditions as specified in UCS6 (b)  are met for Section VIII div 1 vessels From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Agrawal Sunil (Mumbai -Stequ) Sent: Thursday, December 31, 2009 12:55 PM To: materials-welding@googlegroups.com Subject: [MW:3932] Boiler quality steel Vs. Structural quality steel 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 -- 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 m...

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: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of roshan shan Sent: 31 December 2009 07:22 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 anot...

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

There should be no Problem using E309Mo below 300 degee centigrade, for metal SS316 to ASTM A106 Gr.B.   Regards Chitturi On Wed, Dec 30, 2009 at 7:28 PM, babu k < kbabupsg@gmail.com > wrote: 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  -- 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. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from t...

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)....

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 -- 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...

Before carrying out any welding, we should ensure that the resultant welding meet the requirements of code. That's why Welding procedure (WPS) is established. WPS contains all essential & non essential varibales as per referencing code, Based on WPS the test sample is welded and actual records of all essential variables are recorded. After completion of welding, the sample will go for Testing (tensile test, bend test). After successful completion of all testing, all details (welding variables) will be recorded on a form, that is called as Procedure qualification record (PQR).   PQR is actual welding record. This PQR  can be used to support many WPS.   With only Qualified WPS, we can go ahead with welding.   Hope this is clear.   Mhaskar Aly Kuwait. From: Chaitanya Purohit <chaitanya_purohit@yahoo.co.in> To: materials-welding@googlegroups.com Sent: Wed, December 30, 2009 5:01:18 PM Subject: Re: [Bulk] [MW:3926] WPS ...

Dear All, 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. -- 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.

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  -- 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.

In simple words in construction language I can explain WPS / PQR as follows.... there will be Drawing approved for Construction = WPS prepared in initial stage Construction process as per approved Drawing = Qualifiying PQR and Testing As built Preparation and using the approved drawing for Proto type items = Modified WPS based on PQR data, used during welding of similar welds in future Hope I made it clear.... Regards. C. K. Purohit Eng-Tech Weld1 Sr Welding Inspector 2009/12/30 mahen dran < cbemahendar@yahoo.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.   ...

Dear Mahendra, If you are running WPS for the first time then follow what other friends ( Daniek & Sukamal)suggested. Start with draft WPS , run PQR and finalize WPS. If you have many PQR`s in records from previous jobs/project within the required specs and parameters, then you can issue a WPS based on the existing one (s) and no need for a fresh PQR. Regards Fereidoun mahen dran <cbemahendar@yaho o.com > To Sent by: materials-welding@googlegroups.com materials-welding cc @ googlegroups.com Subject ...

Dear Friend, Before doing a new PQR, you have to make a "DRAFT" WPS to run the PQR. After qualifying the NEW PQR with all the required mechanical tests and perameter, modify the DRAFT WPS in a correct WPS with supporting the new PQR with all the correct essential,non essential & supplimentary essential varialbles(if impact required) as per the PQR. 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...

Hi Mahendra, First of all ....before any Qulification WPS and PQR ......you have develop a Preliminary ...or proposed WPS ....which will be base on material ...welding process consumable....and the scope of your application ... According with Proposed WPS ...you will perform ...qualification .welding test.... base on you will record all data per runs ...speed ...heat input. .interpass temp.... After the welding test piece was done...after RT .is gone for mechanical test ....and base on will be issued PQR......according with your satisfactory results ...will be issued final WPS that  will be applied to future production welding (on wps will be specified the PQR numer supported) regards On Wed, Dec 30, 2009 at 1:31 PM, mahen dran < cbemahendar@yahoo.com > wrote: Dear Group    Good day, -------------------------------------------------------------------------------------------------------------------------------- Still I have confusion on WPS and PQR terms.   1. WPS to be...

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: From: mahen dran <cbemahendar@yahoo.com> Subject: [MW:3917] WPS & PQR clarification To: materials-welding@googlegroups.com Date: Wednesday, 30 December, 2009, 12:31 PM Dear Group    Good day, -------------------------------------------------------------------------------------------------------------------------------- Still I have confusion on WPS and PQR terms.   1. WPS to...

Dear Eng. Mostafa, If you wants the permanent record as it is the requirement of ASME Sec. VIII Div. 2 .................... You have following two choices. 1. RT with CO 60 - Since It seems available to and fullfill ther requirement of Code. As you mentioned you are worried about ineficiency of RT for 80mm. You can do manual UT 100% weld length as per ASME section V - Article 4 prior to RT. You can surely find all type of defects like Lack of fusions, cracks, Slags. If the detected defects not acceptable in UT get them repaired. And for code requirement you can do RT for permanent Record.   2. Auto UT ToFD or Phased Array is the best choice for it and accepted by Code case 2239. It may expensive and as you mentioned not easily available. If your job quantity is more you will get it and may be it will cheaper for you. But in this case you should find a company finalise the financial matters and then get the AUT procedure approved for your job. Qualification of AUT procedure is...

you can have RT but for it you have to use strong curie try for it i have tried for SHell of 78mm and it works but in it i use double films for excellent film contrast( ASME INSPECTOR ALLOW ME TO ADOPT THIS METHOD) if you not want RT then UT too has permanent record or go for TOFD (NEW FORM OF UT) On Wed, Dec 30, 2009 at 2:55 PM, Eng/ Mostafa Kamel Hussein < mkh_200@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 -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-wel...

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     ...

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, Link Road , Malad (W), Mumbai - 64 Tel : + 91-22-6777 7029/ Fax : +91-22-6694 5599 E-mail : s.banerjee@ticb.com Website : www.ticb.com From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of Agrawal Sunil (Mumbai -Stequ) Sent: Wednesday, December 30, 2009 10:46 AM To: materials-welding@googlegroups.com 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.   C...

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: materials-welding@googlegroups.com Cc: Bathula Raghuram (Mumbai - PIPING) 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...

Dear Alzoubi, 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, ...

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: From: saqib jalal <sakib321@gmail.com> Subject: Re: [MW:3909] Regarding CSWIP EXAM To: materials-welding@googlegroups.com Date: Sunday, 27 December, 2009, 6:39 PM ya you can appear directly in 3.2 but i prefer you to do CSWIP 4.0 for further detail visit twi website On Sun, Dec 27, 2009 at 12:25 PM, vinit vani < vinit_vani@yahoo.co.in > wrote: Dear ALL         I am BE Mechanical with 9 years experience .I have 8 years experience  in projects ....