Materials & Welding

Low alloy less than 5% of individual or aggregate of total number of alloying elements ,  greater  than 5% and less than 10.5% is medium, and above 10.5 high alloy as mentioned for low alloy. THANKS & BEST REGARDS, KG.PANDITHAN, BE, IWE,  CSWIP 3.1, ISO 9712 Level 2 in VT, ASNT-Level II in PT,MT,RT & UT, LA ISO 9001-2015, International Welding Engineer.  CONSULTANT-WELDING & QUALITY Mobile no: +919940739349 On Wed, Dec 28, 2022 at 11:53 AM mithlesh kumar < mithleshmech47@gmail.com > wrote: Dear expert , Please brief difference between low alloy steel vs high alloy steel. A335 P9 is low or high alloy steel. -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this ...

Flange PT ratings are not available for the subject grade in ASME B16.5, neither ASTMB564 specified this grade nor any equivalent ASTM spec? How are these flanges used in Vessels or Piping when designed to ASME ? -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CADxVubk9B2rR-i8%3DL08Wt0Ra5%3D%2BPJD17OQbKkU2aU%3DsDr%2B8i7A%40mail.gmail.com .

Dear Mr. Mithlesh kumar, when we adding the total alloying elements of Cr,Ni,Mo, if the total is less than or equal to 10% this is low alloy steel, total alloys are greater than 10 % that is high alloy steel. A335 P9 - low alloy steel pipe.      Regards, Sankaran.SP Welding & Metallurgy expert Coimbatore, India.  On Wednesday, 28 December, 2022 at 11:53:51 am IST, mithlesh kumar <mithleshmech47@gmail.com> wrote: Dear expert , Please brief difference between low alloy steel vs high alloy steel. A335 P9 is low or high alloy steel. -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving em...

It's normal with this material experience happening in Aramco different site . You need to conduct 100% RT for but joint and conduct PT for branch connection.additionaly UT can be done . For repair you need to conduct repair only for this as per requirement in SAES -W-16 separate repair WPS required .that repair procedure should be done full thickness repair.. On Wed, 28 Dec 2022, 11:02 Mohd Siraj, < mohd52100@gmail.com > wrote: I will do two additional things, 1. check pickling and passivation are done properly after fabrication. 2. hydrotesting water is potable water and is clean with very clean air/dry air after the test. The welding engineer is giving 300% attention during the fabrication which is true..but leave welding after welding and post-welding precaution is not taking place. On Thursday, December 8, 2022 at 10:52:39 AM UTC+3 GANESH MUTHURAJAN wrote: Good morning sir,  Now i working with duplex and super duplex , RO plant. How to do the repairs in this material, fo...

This must be available in Ur quality documents to conduct Audit for your service provider as per schedule.. On Wed, 28 Dec 2022, 11:02 Mohd Siraj, < mohd52100@gmail.com > wrote: you mean,  NDT subcontractor or NDT material supplier (vendor)? On Monday, December 12, 2022 at 5:14:36 PM UTC+3 Vivek wrote: Dear Members, For NDT supplier assessment, Do we have any audit format/audit checklist?  Thank You  Best Regards Vivek -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/91f49aff-6215-4fd8-b30f-2fe58333c8a8n%40googlegroups.com . -- https://materials-welding.blogspot.com/ https...

Hi, NDT contractor. Regards, Vivek On Wed, Dec 28, 2022 at 1:32 PM Mohd Siraj < mohd52100@gmail.com > wrote: you mean,  NDT subcontractor or NDT material supplier (vendor)? On Monday, December 12, 2022 at 5:14:36 PM UTC+3 Vivek wrote: Dear Members, For NDT supplier assessment, Do we have any audit format/audit checklist?  Thank You  Best Regards Vivek -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/91f49aff-6215-4fd8-b30f-2fe58333c8a8n%40googlegroups.com . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message b...

you can extract sample, 1.5mm from bottom that for root process and one from middle that from smaw. so if u refer figure for impact it is quite clear. however meaning is same u stated. On Thursday, December 15, 2022 at 7:06:37 AM UTC+3 fernando...@gmail.com wrote: referring to impact tests for qualification of welding procedures, it is reasonable to define that for the design situation according to ASME B31.3, in circumferential joints welded by two processes (GTAW -root / SMAW - others), each process must be separately impact tested (in the same way as it is done today for ASME VIII div 1)?   There is no text that makes this statement explicitly on B31.3. Thanks and regards,  Fernando Lescovar Neto IWE -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it...

i can understand your situation,  pl refer API-576 para 6,8 and API520. would be useful. On Tuesday, December 13, 2022 at 10:13:28 AM UTC+3 PK wrote: Dear Experts, Anyone Have Please Forward  PSV & PRV Related Installation Handling Removal Videos And Procedure,ITPs. Thank You. PK -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/b4760844-cb53-47cc-a795-f468d77f18cbn%40googlegroups.com .

"> chromium depletion in the surrounding area. Corrosion is therefore limited to zones where niobium carbide has been re-dissolved, i.e. zones in the immedi ate vicinity of the weld. These zones are rather narrow and this type of inter granular corrosion attack is thus called knife line corrosion. Its appears only in stabilized aus tenitic materials in both the HAZ of the base metal and the HAZ of the weld metal in multi-layer welds or where there are two or more parallel weld deposits. Fig. 88 shows the appearence of some typical welded joints where intergranular corrosion has taken place according to Schabereiter [253]. After welding, these specimens were annealed in the temperature range of550-600° C and then subject ed to the Strauss test. In the unstabilized, corrosion susceptible materials (upper micrographs), intergranular corrosion attack occurs over the whole area of the weld metal (Fig. 88a) and the base metal (Fig. 88b). The specimens were taken from ...

Dear expert , Please brief difference between low alloy steel vs high alloy steel. A335 P9 is low or high alloy steel. -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/62edc733-0051-4b57-9c08-171a8ff85d71n%40googlegroups.com .

Is Zr is stabilize element, of so, what is classification of ASS.  On Mon, Dec 26, 2022, 8:40 AM 'Sankaran Sp' via Materials & Welding < materials-welding@googlegroups.com > wrote: Dear  Mr.Prakash, stabilized heat treament is required for stablized staniless steel only, not for all SS grades. stabilizing alloys of Like : Nb/Cb, Ti ,Zr & others are speciafiaclly added in the normal SS aloys to avoid senstitization, after solution heat treatement we don't know about whether these stabilzed alloys are setteld in grain boundry or in the core. hence to ensure the stabilized alloys in grain boundry this stabilized heat treatment is essential, as per ASTM A 182 ot ASTM A 351 this stabilized heat teratment is given as subimentary variable for forging & casting respectively. During stabilized heat treatement soaking hour to given as 4 hour (min).             Regards, Sankaran.SP Welding & Metallurgy expert Coimbatore, India.  ...

expand GI On Mon, Dec 26, 2022, 1:02 PM Manoj Singh < manoj.singh1178@gmail.com > wrote: Dear Experts, Does any one experienced welding of G.I and Cast Iron in their career time, Is it possible to weld the said metal, if someone has the experience please share the details of the same. As we are trying to weld the said metal  it is cracking at the same time before cooling. Your comments will be highly appreciable. Thanks & Regards, Manoj Singh -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAPkJdRKuv05CRTxrUAWWNR%2Bh_QG0zpmgucnxbc50imwgBW9O1Q%40mail.gmail.com . -- https:/...

Regarding PQR Qualification, Weld a clad plate of similar composition (as production Joint) with 254 SMO Alloy plate (based on production joint dissimilar thickness allowed) Thanks & Regards J.Gerald Jayakumar On Monday, 26 December, 2022 at 08:40:51 am IST, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote: Weld the joint as per attached configuration as a single vee joint using alloy filler wire/electrode such as ER/E NiCrMo3 for the complete joint. Thanks & Regards J.Gerald Jayakumar On Friday, 23 December, 2022 at 04:35:28 pm IST, atul jha <atulkrjha21@gmail.com> wrote: Dear sir I Have to ...

Stainless steel is the name for a range of steels used primarily because of its  corrosion resistance. It is made up of chromium, iron and (in some cases) nickel, molybdenum and other metals. For a metal alloy (a metal made by combining  two or more metallic elements) to be considered stainless steel, it should consist  of at least 10.5% of Chromium; this composition prevents the iron in stainless  steel rusting and provides heat-resistant properties. As this is to be deemed stainless steel, a huge number of metal  alloys fall into  this category. These have been split into five groups (or families)  of stainless steel: 1)         Austenitic 2)         Ferritic 3)         Duplex 4)         Martensitic 5)         Precipitation hardening steels Of ...

Dear Experts, Does any one experienced welding of G.I and Cast Iron in their career time, Is it possible to weld the said metal, if someone has the experience please share the details of the same. As we are trying to weld the said metal  it is cracking at the same time before cooling. Your comments will be highly appreciable. Thanks & Regards, Manoj Singh -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAPkJdRKuv05CRTxrUAWWNR%2Bh_QG0zpmgucnxbc50imwgBW9O1Q%40mail.gmail.com .

A single WPS will suffice this requirement , Mr.Williamns  your undestanding was correct ,  ensure  consuambels are using  while production welding are meeting the requirment of Gr.70 plate weding in WPS as a note. if you want to support this PQR for pressure vessels  u need  SA 516 Grade 70  65  60 MTLTV to SA 516 Grade 70  65  60 MTLTV (mostly prefered combination )- it can support for all the combinations  in other case you can have one side it is SA 516 Grade 70  65  60 MTLTV and other side  SA 516 Grade 65 plate for plate  to pipe /flange /fitting scope (better avode this ) - some clients wants this combination also.. u can concence them with code. Regards, Srinivas Rao welding Engineer  On Thursday, December 22, 2022 at 7:23:32 AM UTC+4 Zacharias Rohith Joseph wrote: All these are P1 materials then they should be qualified by default.  On Monday, 28 November 2022 at 16:27:00 UTC+13 williamswilsonp wrot...

Mainly avoids WELD DECAY. Thanks & Regards J.Gerald Jayakumar On Monday, 26 December, 2022 at 10:21:46 am IST, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote: Just to add, the purpose of this HT is to form stable TiC & NbC and hence the name stabilization HT Thanks & Regards J.Gerald Jayakumar On Monday, 26 December, 2022 at 09:28:49 am IST, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote: Basically it is performed to form TiC and/ NbC and so no further C available for IGC attack/ Thanks & Regards J.Gerald Jayakumar ...

Just to add, the purpose of this HT is to form stable TiC & NbC and hence the name stabilization HT Thanks & Regards J.Gerald Jayakumar On Monday, 26 December, 2022 at 09:28:49 am IST, 'james gerald' via Materials & Welding <materials-welding@googlegroups.com> wrote: Basically it is performed to form TiC and/ NbC and so no further C available for IGC attack/ Thanks & Regards J.Gerald Jayakumar On Monday, 26 December, 2022 at 08:48:47 am IST, 'Sankaran Sp' via Materials & Welding <materials-welding@googlegroups.com> wrote: Dear  Mr.Prakash, stabilized heat treament is required for stablized staniless...

Basically it is performed to form TiC and/ NbC and so no further C available for IGC attack/ Thanks & Regards J.Gerald Jayakumar On Monday, 26 December, 2022 at 08:48:47 am IST, 'Sankaran Sp' via Materials & Welding <materials-welding@googlegroups.com> wrote: Dear  Mr.Prakash, stabilized heat treament is required for stablized staniless steel only, not for all SS grades. stabilizing alloys of Like : Nb/Cb, Ti ,Zr & others are speciafiaclly added in the normal SS aloys to avoid senstitization, after solution heat treatement we don't know about whether these stabilzed alloys are setteld in grain boundry or in the core. hence to ensure the stabilized alloys in grain boundry this stabilized heat treatment is essential, as per ASTM A 182 ot ASTM A 351 this stabilized heat teratment is given ...