Materials & Welding

XRF can only detect elements with atomic numbers greater than 21 i.e. starting with Titanium onwards. Therefore, it cannot quantify C, S, P, etc. So, it can tell the difference between SS304 and SS316, but not SS316 and SS316L. OES can detect all the elements including carbon, so it can be used very conveniently for segregating even SS316 and SS316L. Regards, Kartik Iyer. ELCA Laboratories. ----- Original Message ----- From: "Bathula Raghuram (Mumbai - PIPING)" <R.Bathula@ticb.com> To: <materials-welding@googlegroups.com> Sent: Thursday, March 27, 2008 7:22 PM Subject: [MW:699] RE: 698] Re: PMI TESTING OF SS 304L that's one of the main diff between OES and XRF analysers, where XRF analysers can't detect %C and trace elements like S,P etc.... -----Original Message----- From: materials-welding@googlegroups.com on behalf of shailesh dave Sent: Wed 26/03/2008 18:30 To: materials-welding@googlegroups.com Subject: [MW:698] Re: PMI TESTING OF SS 304L DEAR PINAKIN...

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that's one of the main diff between OES and XRF analysers, where XRF analysers can't detect %C and trace elements like S,P etc.... -----Original Message----- From: materials-welding@googlegroups.com on behalf of shailesh dave Sent: Wed 26/03/2008 18:30 To: materials-welding@googlegroups.com Subject: [MW:698] Re: PMI TESTING OF SS 304L DEAR PINAKIN, THANKS FOR THE REPLY. IN THAT CASE HOW TO DIFFERNTIATE SS304 FROM 304L AND SS316 FROM 316L. IF WE CAN NOT ANALYSE CARBON %. REGARDS, S.N.DAVE pinakin jani <pbjani50@yahoo.co.in> wrote: Dear Dave, PMI can tell you the % of the contains like Ni, mo etc. Based on this % we can check our requirement. Regards, Jani Pinakin ----- Original Message ---- From: Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com> To: materials-welding@googlegroups.com Sent: Monday, 24 March, 2008 2:42:02 PM Subject: [MW:686] PMI TESTING OF SS 304L Probably spectro isort by Amtek can detect C, (th...

DEAR PINAKIN,   THANKS FOR THE REPLY. IN THAT CASE HOW TO DIFFERNTIATE SS304 FROM 304L AND SS316 FROM 316L. IF WE CAN NOT ANALYSE CARBON %.   REGARDS,   S.N.DAVE pinakin jani <pbjani50@yahoo.co.in> wrote: Dear Dave, PMI can tell you the % of the contains like Ni, mo etc. Based on this % we can check our requirement.   Regards,   Jani Pinakin ----- Original Message ---- From: Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com> To: materials-welding@googlegroups.com Sent: Monday, 24 March, 2008 2:42:02 PM Subject: [MW:686] PMI TESTING OF SS 304L Probably spectro isort by Amtek can detect C, (thou I have not used it), you can try at www.spectro.com   Also Arcmet930 by Metorex can detect C   From: shailesh dave [mailto: snd2988@yahoo.com ] Sent: Monday, March 24, 2008 2:07 PM To: materials-welding@googlegroups.com Subject: PMI TESTING OF SS 304L   DEAR MEMBERS, ...

Dear Dave, PMI can tell you the % of the contains like Ni, mo etc. Based on this % we can check our requirement.   Regards,   Jani Pinakin ----- Original Message ---- From: Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com> To: materials-welding@googlegroups.com Sent: Monday, 24 March, 2008 2:42:02 PM Subject: [MW:686] PMI TESTING OF SS 304L Probably spectro isort by Amtek can detect C, (thou I have not used it), you can try at www.spectro.com   Also Arcmet930 by Metorex can detect C   From: shailesh dave [mailto: snd2988@yahoo.com ] Sent: Monday, March 24, 2008 2:07 PM To: materials-welding@googlegroups.com Subject: PMI TESTING OF SS 304L   DEAR MEMBERS,   CAN ANYBODY TELL ME WHAT TECHNIQUE SHOULD BE USE TO PERFORM PMI OF SS304L. SINCE CARBON ANALYSIS IS VERY VERY IMPORTANT.   REGARDS,   S.N.DAVE   QA/...

Dear all, I think my question is not clear to all, so i can explain once again that: to make a WPS by combining two PQR's, is it mandatory that the first PQR shall be qualified in half inch minimum?   sajeev Raghuram Bathula <raghurambathula@gmail.com> wrote: for GTAW process T would be 20mm max. On Mar 25, 6:33 pm, "kumara bala" wrote: > Is it 20 or 200? It might be 200.. > > On Mon, Mar 24, 2008 at 7:04 AM, Bathula Raghuram (Mumbai - PIPING) < > > R.Bath...@ticb.com> wrote: > > You can use combination of these processes to weld a base metal thickness > > (T) of up to 20mm max. > > > ------------------------------ > > > *From:* materials-welding@googlegroups.com [mailto: > > materials-welding@googlegroups.com] *On Behalf Of *shabbir ahmad > > *Sent:* Saturday, March 22, 2008 2:07 PM > > *To:* materials-welding@googlegroups.com > > *Subject:* [MW:683] Re: Section IX QW 200.4(b) >...

for GTAW process T would be 20mm max. On Mar 25, 6:33 pm, "kumara bala" <kumsr...@gmail.com> wrote: > Is it 20 or 200? It might be 200.. > > On Mon, Mar 24, 2008 at 7:04 AM, Bathula Raghuram (Mumbai - PIPING) < > > R.Bath...@ticb.com> wrote: > > You can use combination of these processes to weld a base metal thickness > > (T) of up to 20mm max. > > > ------------------------------ > > > *From:* materials-welding@googlegroups.com [mailto: > > materials-welding@googlegroups.com] *On Behalf Of *shabbir ahmad > > *Sent:* Saturday, March 22, 2008 2:07 PM > > *To:* materials-welding@googlegroups.com > > *Subject:* [MW:683] Re: Section IX QW 200.4(b) > > > Yes Sanjeev > > > U can use GTAW for root deposit as per QW 200.4b. > > > shabbir > > > On 3/21/08, *jitendra Thakor* <jitendratha...@gmail.com> wrote: > > > Dear Sanjeev > > > As per QW200...

Is it 20 or 200? It might be 200.. On Mon, Mar 24, 2008 at 7:04 AM, Bathula Raghuram (Mumbai - PIPING) < R.Bathula@ticb.com > wrote: You can use combination of these processes to weld a base metal thickness (T) of up to 20mm max.   From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of shabbir ahmad Sent: Saturday, March 22, 2008 2:07 PM To: materials-welding@googlegroups.com Subject: [MW:683] Re: Section IX QW 200.4(b)   Yes Sanjeev   U can use GTAW for root deposit as per QW 200.4b.   shabbir   On 3/21/08, jitendra Thakor < jitendrathakor@gmail.com > wrote: Dear Sanjeev As per QW200.4(b) it is mandatory that your GTAW PQR thickness should be minimum 13 mm. than you use GTAW as root as qualified in PQR. Regards Jitendra On Fri, Mar 21, 2008 at 2:11 PM, sajeev c.g < sajeevmech@yahoo.com > wrote: > Dear all, > > I have to prepare a WPS from two PQR's as...

Dear Sir, Unlike using the ED-XRF, there are quite a few areas to be taken care of, in case you will be using a spark emission portable spectrometer like the ARCMET. Argon gas of 99.999% min purity is to be used. The gas flow also has to be controlled as per the instrument requirements, as even setting an improper flow rate can lead to improper purging, eventually leading to a deviation in the test results. Also, the surface to be checked has to be polished using a 60 grit paper ( as this surface finish is used when the equipment is calibrated). This polished surface should the be checked as soon as possible to avoid any contamination. Nowadays, when we use the new models like the ARCMET 8000, we can test flat as well as round surfaces, as there are adapters available for the same. Normally, even 1 inch O/D pipes can also be checked using this equipment with concordant results as per our experience. Of course, for flat surfaces, there is no problem at all. Generally, this is a slower p...

Dear all,   When using Arcmet its vital to get 99.9% pure argon gas plus ensuring that the surface is grinded and polished. Here is an excerpt from TCR's procedure for Arcmet operations in terms of pre-requisites:   The component subjected to the test shall have a flat surface area of approximately about 20 x 20mm square and the same shall be finished with a 60 grit abrasive paper using either a portable grinder or a polishing machine. The metallic surface to be tested shall be free from all extraneous materials such as scale, grease, rust, dirt, etc. which may interfere with the testing. ArcMet cannot be used for smaller size pipes and fittings.  Its best performance is for larger than 50 NB size. For optical emissions based PMI, the technician will need Instrument Grade Argon of 99.999% purity argon gas as well available at site. Input of 230 Volt AC is required.    We do PMI with both  XRF as well as portable OES (such as an Arcmet) in Saudi Ara...

you can try ultrahigh pure from the following range, research purity may not be avaialble offthe shelf RESEARCH PURITY 99.9999% ULTRA HIGH PURE 99.999% PRE-PURIFIED 99.998% ZERO GAS 99.998% HIGH PURITY 99.995% also surface cleaning of the conatcat area importatnt, consult your analyser supplier for further help! On Mar 24, 3:35 pm, shailesh dave <snd2...@yahoo.com> wrote: DEAR Mr. RAGHURAM, BUT SPARK EMISSION WHAT WE ARE ADOPTING HERE IS ARGON BASED AND MANY TIMES I FOUND PURITY OF ARGON IS NOT ENSURED. HENCE I AM RELUCANT TO GO FOR SPARK EMISSION FOR PMI OF LOW CARBON SS. YOUR VIEWS PLEASE. REGARDS, S.N.DAVE --~--~---------~--~----~------------~-------~--~----~ 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 person...

DEAR Mr. RAGHURAM,   BUT SPARK EMISSION WHAT WE ARE ADOPTING HERE IS ARGON BASED AND MANY TIMES I FOUND PURITY OF ARGON IS NOT ENSURED. HENCE I AM RELUCANT TO GO FOR SPARK EMISSION FOR PMI OF LOW CARBON SS.   YOUR VIEWS PLEASE.   REGARDS,   S.N.DAVE "Bathula Raghuram (Mumbai - PIPING)" <R.Bathula@ticb.com> wrote: Why not? Infact only sprak emission method can detect C, as these are not portables instruments maneuvering at construction sites is very difficult Both Arc met and PMI Master (see the other post by Mr Nadig, WAS is from oxford instruments, US) are gas based, where the principle of Spectro isort is quite different, it neither use Argon nor X-ray source.   However take care while using spark emission on lighter wall components     From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of shailesh dave Sent: Monday, March 24, 2008 2:58...

Why not? Infact only sprak emission method can detect C, as these are not portables instruments maneuvering at construction sites is very difficult Both Arc met and PMI Master (see the other post by Mr Nadig, WAS is from oxford instruments, US) are gas based, where the principle of Spectro isort is quite different, it neither use Argon nor X-ray source.   However take care while using spark emission on lighter wall components     From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of shailesh dave Sent: Monday, March 24, 2008 2:58 PM To: materials-welding@googlegroups.com Subject: [MW:688] Re: PMI TESTING OF SS 304L   DEAR Mr. RAGHURAM,   THANKS FOR THE REPLY. JUST ADVISE ME IS IT RECOMMANDED TO USE SPARK EMISSION TECHNIQUE ON SS 304L MATERAIL FOR PMI.   AWAITING YOUR REPLY.   REGARDS,   S.N.DAVE " Bathula R...

We are using PMI- Master Plus  supplied by WAS World wide Analytical System AG,Germany for PMI where carbon detection is needed. Regards Nadig On Mon, 24 Mar 2008 Bathula Raghuram(Mumbai - PIPING) wrote : >Probably spectro isort by Amtek can detect C, (thou I have not used it), >you can try at www.spectro.com <http://www.spectro.com/> > > > >Also Arcmet930 by Metorex can detect C > > > >________________________________ > > From: shailesh dave [mailto:snd2988@yahoo.com] >Sent: Monday, March 24, 2008 2:07 PM >To: materials-welding@googlegroups.com >Subject: PMI TESTING OF SS 304L > > > >DEAR MEMBERS, > > > >CAN ANYBODY TELL ME WHAT TECHNIQUE SHOULD BE USE TO PERFORM PMI OF >SS304L. SINCE CARBON ANALYSIS IS VERY VERY IMPORTANT. > > > >REGARDS, > > > >S.N.DAVE > > > >QA/QC MANAGER - TATA PROJECTS, > > > >IWPP -III,...

DEAR Mr. RAGHURAM,   THANKS FOR THE REPLY. JUST ADVISE ME IS IT RECOMMANDED TO USE SPARK EMISSION TECHNIQUE ON SS 304L MATERAIL FOR PMI.   AWAITING YOUR REPLY.   REGARDS,   S.N.DAVE "Bathula Raghuram (Mumbai - PIPING)" <R.Bathula@ticb.com> wrote: Probably spectro isort by Amtek can detect C, (thou I have not used it), you can try at www.spectro.com   Also Arcmet930 by Metorex can detect C   From: shailesh dave [mailto: snd2988@yahoo.com ] Sent: Monday, March 24, 2008 2:07 PM To: materials-welding@googlegroups.com Subject: PMI TESTING OF SS 304L   DEAR MEMBERS,   CAN ANYBODY TELL ME WHAT TECHNIQUE SHOULD BE USE TO PERFORM PMI OF SS304L. SINCE CARBON ANALYSIS IS VERY VERY IMPORTANT.   REGARDS,   S.N.DAVE   QA/QC MANAGER - TATA PROJECTS,   IWPP -III, SHUIBAH , SAUDI ARABIA Be a better friend, newshound, and know-i...

Probably spectro isort by Amtek can detect C, (thou I have not used it), you can try at www.spectro.com   Also Arcmet930 by Metorex can detect C   From: shailesh dave [mailto: snd2988@yahoo.com ] Sent: Monday, March 24, 2008 2:07 PM To: materials-welding@googlegroups.com Subject: PMI TESTING OF SS 304L   DEAR MEMBERS,   CAN ANYBODY TELL ME WHAT TECHNIQUE SHOULD BE USE TO PERFORM PMI OF SS304L. SINCE CARBON ANALYSIS IS VERY VERY IMPORTANT.   REGARDS,   S.N.DAVE   QA/QC MANAGER - TATA PROJECTS,   IWPP -III, SHUIBAH , SAUDI ARABIA --~--~---------~--~----~------------~-------~--~----~ 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 expres...

You can use combination of these processes to weld a base metal thickness (T) of up to 20mm max.   From: materials-welding@googlegroups.com [mailto: materials-welding@googlegroups.com ] On Behalf Of shabbir ahmad Sent: Saturday, March 22, 2008 2:07 PM To: materials-welding@googlegroups.com Subject: [MW:683] Re: Section IX QW 200.4(b)   Yes Sanjeev   U can use GTAW for root deposit as per QW 200.4b.   shabbir   On 3/21/08, jitendra Thakor < jitendrathakor@gmail.com > wrote: Dear Sanjeev As per QW200.4(b) it is mandatory that your GTAW PQR thickness should be minimum 13 mm. than you use GTAW as root as qualified in PQR. Regards Jitendra On Fri, Mar 21, 2008 at 2:11 PM, sajeev c.g < sajeevmech@yahoo.com > wrote: > Dear all, > > I have to prepare a WPS from two PQR's as per section IX. > PQR 1 qualified in 10mm coupon full GTAW > PQR 2 qualified in 40mm coupon ...

  friends,       I want to write a wps as per section IX PQR 1 Qualified 10 mm coupon full GTAW PQR 2 Qualified 40 mm coupon SMAW +SAW CAN I WRITE WPS  ROOT GTAW + SMAW or SAW is it mandatory 200.4 (b) PQR 1 qualified 13 mm            BABU.P.R WELDING INSPECTOR IREM K.S.A Looking for last minute shopping deals? Find them fast with Yahoo! Search. --~--~---------~--~----~------------~-------~--~----~ 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. -~----------~----~----~----~-----...

Yes Sanjeev   U can use GTAW for root deposit as per QW 200.4b.   shabbir   On 3/21/08, jitendra Thakor < jitendrathakor@gmail.com > wrote: Dear Sanjeev As per QW200.4(b) it is mandatory that your GTAW PQR thickness should be minimum 13 mm. than you use GTAW as root as qualified in PQR. Regards Jitendra On Fri, Mar 21, 2008 at 2:11 PM, sajeev c.g < sajeevmech@yahoo.com > wrote: > Dear all, > > I have to prepare a WPS from two PQR's as per section IX. > PQR 1 qualified in 10mm coupon full GTAW > PQR 2 qualified in 40mm coupon SMAW+SAW(20mm deposit each) > > Can i write a WPS to weld GTAW (root) + SMAW+SAW? > As per QW200.4(b) is it mandatory that the PQR 1 will be qualified in 13mm > minimum to write a WPS as above? > > Regards > sajeev > >  ________________________________ > > Looking for last minute shopping deals? Find them fast with Yahoo! Search. > > > --~--~---------~--~---...

Dear Sanjeev As per QW200.4(b) it is mandatory that your GTAW PQR thickness should be minimum 13 mm. than you use GTAW as root as qualified in PQR. Regards Jitendra On Fri, Mar 21, 2008 at 2:11 PM, sajeev c.g <sajeevmech@yahoo.com> wrote: > Dear all, > > I have to prepare a WPS from two PQR's as per section IX. > PQR 1 qualified in 10mm coupon full GTAW > PQR 2 qualified in 40mm coupon SMAW+SAW(20mm deposit each) > > Can i write a WPS to weld GTAW (root) + SMAW+SAW? > As per QW200.4(b) is it mandatory that the PQR 1 will be qualified in 13mm > minimum to write a WPS as above? > > Regards > sajeev > > ________________________________ > > Looking for last minute shopping deals? Find them fast with Yahoo! Search. > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubscribe@goog...

Dear all,   I have to prepare a WPS from two PQR's as per section IX. PQR 1 qualified in 10mm coupon full GTAW PQR 2 qualified in 40mm coupon SMAW+SAW(20mm deposit each)   Can i write a WPS to weld GTAW (root) + SMAW+SAW? As per QW200.4(b) is it mandatory that the PQR 1 will be qualified in 13mm minimum to write a WPS as above?   Regards sajeev Looking for last minute shopping deals? Find them fast with Yahoo! Search. --~--~---------~--~----~------------~-------~--~----~ 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. -~----------~----~...

QUESTION: Our piping specification requires that duplex stainless-steel castings be supplied per ASTM A890. A valve company took exception, and indicated that duplex valve bodies and bonnets would be supplied per ASTM A995. What is the difference between these specifications? ANSWER: ASTM A890 "Castings, Iron-Chromium-Nickel-Molybdenum Corrosion Resistant, Duplex (Austenite-Ferrite) for General Application" was released in 1988, the first ASTM standard that covered the modern duplex stainless-steel casting grades. As such, many piping specifications include references to ASTM A890 and its various duplex grades for piping components such as valves. Unfortunately, ASTM A890 has some shortcomings when used to purchase pressure-retaining components. ASTM A890 references ASTM A781 "Castings, Steel and Alloy, Common Requirements, for General Industrial Use" for coverage of general requirements. ASTM A781 refers back to the individual product specification (A890) ...