Materials & Welding

Some basic understanding on code reading, In B31.3 they have simply mentioned about material thickness, P No and group no which is interlink with each other in one table and below is code statement.  331 HEAT TREATMENT 331.1 General 331.1.1 Postweld Heat Treatment Requirements ð18Þ (a) PWHT shall be in accordance with the material groupings (P-Nos. and Group Nos.) and ranges in Table 331.1.1 except as provided in Table 331.1.2 and Table 331.1.3. See Appendix F, para. F331.1. The P Numbers and Group Numbers are defined in ASME BPVC, Section IX, Table QW/QB-422. (Note that the PNos. are also listed in Appendix A.) It means all factor shall be always taken in to consideration and not any particular.  Check also about CEV for PWHT.  Regards, On Thursday, September 9, 2021 at 9:17:38 AM UTC+3 senins wrote: Dear all,          Pls I needs your all valuable comments regarding PWHT thickness, As per ASME B31.3 2018  ,Table 331.1.1, whether PWHT based on thickness of base metal or ...

Thanks ; Infact we cleared this issue  300 degree was the preheat given .. even we maintained the inter pass temperature above 250 .. finished the welding after 8hrs continuously without any interruptions.. finally gave pwht @ 600 degree with half hr hold .. later slow cooling with the thermal blanket still in place .. Tempering must have gone away by this process and the tensile also would have come down .. but still we pressure tested it at 300 bar without failure  On Mon, Nov 29, 2021 at 13:26 Simon Krismer < simon@wqms.com.au > wrote: 150C is way too low for 4145. The HAZ Hardness will be 50-60HRC at that temperature, and you are no doubt getting hydrogen cracking rather than lack of fusion.  You will need 250C preheat at least, probably higher for the root run.  On Friday, 30 July 2021 at 12:13:53 pm UTC+10 chris wrote: Hello friends; Was this query answered?  I am also encountering a similar problem in welding 4145tube to S355. we are experiencing a lack of fusion on the 41...

345.3 Preparation for Leak Test 345.3.1 Joints Exposed (d) All joints may be primed and painted prior to leak testing unless a sensitive leak test (para. 345.8) is required. Regards, On Tuesday, 12 October 2021 at 14:47:49 UTC+3 kkmec...@gmail.com wrote: Dear Experts, As per b 31.3 Joints can be painted before leak test. Is the leak test referred here as a hydrotest also? Please confirm. Best Regards,   Krishna Kamal Nayan      -- 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/7397a251-fc13-4417-9cc3-40e623f58458n%40googlegroups.com .

150C is way too low for 4145. The HAZ Hardness will be 50-60HRC at that temperature, and you are no doubt getting hydrogen cracking rather than lack of fusion.  You will need 250C preheat at least, probably higher for the root run.  On Friday, 30 July 2021 at 12:13:53 pm UTC+10 chris wrote: Hello friends; Was this query answered?  I am also encountering a similar problem in welding 4145tube to S355. we are experiencing a lack of fusion on the 4145 tube side. Preheat given 150°C Electrodes tried E7018 and E10018 MTC attached. The tube is Quench tempered. Any suggestions on this? Thanks in Advance. Chris   On Monday, August 1, 2011 at 8:40:15 AM UTC+4 Mitesh Patel wrote: Dear Mubben  Please Find H/W Attached Doc. Which is help to selection of Welding  consumable ( SMAW & GTAW )  Mitesh Patel Sr, QA/QC Engg On Fri, Jul 29, 2011 at 10:31 PM, mubeen mubeen < mube...@gmail.com > wrote: Hi, Can anybody help me out in order to weld subject base material with appropriate...

Reply to th e question of Mr K D Pandithan As per the recommendation of Special Metals--US A  Following grades are recommended for dissimilar welding of 625 to grade 310 S Steel 1--INCONEL 617==ERNICRCOMO-1       FOR HIGHEST TEMP SERVICE (INCO 617 HAS HIGH COBALT CONTENT) 2--INCONEL 625==ERNICRMO-3       FOR MEDIUM TEMP  SERVICE  3--INCONEL 82=ERNICR-3               FOR LOWER SERVICE TEMP     Regards C  C GIROTRA ===================================================================================== On Thu, Nov 25, 2021 at 10:23 AM < materials-welding@googlegroups.com > wrote: materials-welding@googlegroups.com Google Groups Topic digest View all topics [MW:32611] Which Filler wire to b...

For the first point the filler you can used ER Ni cr Mo-3 For dish head after cold forming it depends  on fiber elongation of material usually 5 to 10 fiber elongation PWHT is required and above 10 Normalizing and tempering is required. On Wed, Nov 24, 2021 at 6:19 AM rahmat khan < mkrahmat11730@gmail.com > wrote: As per my understanding For P43 Filler wire ER NiCrMo-3 is suitable as per chemical and mechanical properties. On Tuesday, November 23, 2021 at 2:14:21 PM UTC+5:30 rahmat khan wrote: Dear All, Please help me with this: 1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S). 2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end. Please help me I this?   -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are ...

Why Inconel 625 is not suitable, could you elaborate to understand. 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, Nov 24, 2021 at 1:39 PM Arun Padman < arunpadman0105@gmail.com > wrote: Dear, ER NiCrMo-3 is suitable to weld 625 to 600/625/825/C-22/B-2 etc., not 310. Regards, Arun Padman Manayil P     Save a tree. Please don't print this e-mail unless you really need to On Wed, Nov 24, 2021 at 6:19 AM rahmat khan < mkrahmat11730@gmail.com > wrote: As per my understanding For P43 Filler wire ER NiCrMo-3 is suitable as per chemical and mechanical properties. On Tuesday, November 23, 2021 at 2:14:21 PM UTC+5:30 rahmat khan wrote: Dear All, Please help me with this: 1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 ...

Dear, ER NiCrMo-3 is suitable to weld 625 to 600/625/825/C-22/B-2 etc., not 310. Regards, Arun Padman Manayil P     Save a tree. Please don't print this e-mail unless you really need to On Wed, Nov 24, 2021 at 6:19 AM rahmat khan < mkrahmat11730@gmail.com > wrote: As per my understanding For P43 Filler wire ER NiCrMo-3 is suitable as per chemical and mechanical properties. On Tuesday, November 23, 2021 at 2:14:21 PM UTC+5:30 rahmat khan wrote: Dear All, Please help me with this: 1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S). 2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end. Please help me I this?   -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials...

inconel 625 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 Tue, Nov 23, 2021 at 2:14 PM rahmat khan < mkrahmat11730@gmail.com > wrote: Dear All, Please help me with this: 1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S). 2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end. Please help me I this?   -- 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...

As per my understanding For P43 Filler wire ER NiCrMo-3 is suitable as per chemical and mechanical properties. On Tuesday, November 23, 2021 at 2:14:21 PM UTC+5:30 rahmat khan wrote: Dear All, Please help me with this: 1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S). 2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end. Please help me I this?   -- 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/3e2b21db-9755-4cba...

Dear, For welding  Inconel 625 to 310 you can use ER NiCrFe-2 or-3. Regards, Arun Padman Manayil P     Save a tree. Please don't print this e-mail unless you really need to On Tue, Nov 23, 2021 at 11:44 AM rahmat khan < mkrahmat11730@gmail.com > wrote: Dear All, Please help me with this: 1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S). 2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end. Please help me I this?   -- 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 t...

Dear All, Please help me with this: 1) which filler wire is to be used for GTAW welding of two dissimilar materials P number that is P43 (Inconel 625) to P8 (A240 310S). 2) For SA 516 Gr 70 22mm thick. Ellipsoidal 2:1 dish end, which heat treatment to be used as per ASME Sec VIII Div I UCS 56 After cold forming of dish end. Please help me I this?   -- 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/441df1fa-c04c-4f4a-a027-af6c169e7cc3n%40googlegroups.com .

Dear experts,          What is the ASTM equivalent material for JAPANESE STANDARD SN53B11. -- 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/27d5da65-6d4b-4b43-a55c-01531729fcf8n%40googlegroups.com .

Dear, U can use ERCuAl-A2  Take care if the pump working in heavy corrosive fluid , then impeller to be heat treated after welding repair Best Regards , ENG. Ahmed Osman On Tuesday, November 16, 2021, 06:33:25 a.m. GMT+3, alexcalangi.cpmcgsi@gmail.com <alexcalangi.cpmcgsi@gmail.com> wrote: Dear Experts,   We have a pump impeller with crack for repair. The material specification for this impeller is Aluminum Bronze Casting (AlBC3 / ASTM C95800).   With this regards, what should be the appropriate welding filler or electrode to be used for this type of material?   Thanks in advance for your support.   Best regards, Alex -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Goog...

On Tue, Nov 16, 2021 at 10:22 AM < materials-welding@googlegroups.com > wrote: materials-welding@googlegroups.com Google Groups            Dear Mr Alex  Your material 95800 is commonly used Al Bronze with Nickel .  It is used for sea water service.  Please use matching grade electrode /wire conforming to AWS ECuAlNi/ERCuAlNi grades A well known brand to suit is  AMPCOTRODE 46  electrode and AMPCOTRODE 46 wire. You can use any other brand too as long it is as per AWS standard. Regards C C Girotra Topic digest View all topics Pump Impeller crack repair - 1 Update Pump Impeller crack repair ...

Dear Experts,   We have a pump impeller with crack for repair. The material specification for this impeller is Aluminum Bronze Casting (AlBC3 / ASTM C95800).   With this regards, what should be the appropriate welding filler or electrode to be used for this type of material?   Thanks in advance for your support.   Best regards, Alex

Yes it is mandatory to resist these we have to restist % of oxygen during welding . Reason is this there is a chances of formation of oxide on weld and adjascent area heat sinks marks found with defferent colour which highlights a depletion of corrosive property. By pickling passivation its help to reform that llayer and safe material and weld. Its shouod be general practise no need to mention it as a stage in itp. As per our manufacturing practise we did it regular basis and got good results. It will help after installation during service also. Go for it frelly it helps. I m sharing my experience not bookish lines On Thu, 11 Nov 2021, 7:11 am Maulik Thakkar, < mlkthakkar2@gmail.com > wrote: Dear all, Can any one suggest picking and Passivation procedure for Hastelloy? After Heat Treatment and After Welding. Is it mandatory to perform Picking and Passivation? Please provide literature or Standard if any. Regards, Maulik -- https://materials-welding.blogspot.com/ https...

Dear Neilash,  What happens is that you must maintain a constant preheating of the base metal side, during the application of the Hastelloy C22 cladding.   Why ?: The 1.4776 base material has a high carbon content (0.30 to 0.45%) and a high Cr content (about 30%), it is a high temperature resistant stainless steel.  And C22 is high alloy too.  A little difficult to welding. To avoid those hot cracks from the cladding, preheat to 350 °F on the opposite side of the base metal, approximately for the duration of the weld. Then, immediately, cover the piece with mineral wool and let it cool slowly, slowly, to room temperature. Do the corresponding NDTs again. And evaluate. Luck!   Ramon Briceno linkedin.com/in/ramonbriceno-metalengineer De: 'Neilash Kumar' via Materials & Welding <materials-welding@googlegroups.com> Enviado: miércoles, 10 de noviembre de 2021 11:19 p. m. Para: materials-welding@googleg...

How much flared dia from to which dia  What is % ? On Thu, 11 Nov 2021, 08:41 Raja Pandiyan, < krajapandiyan@gmail.com > wrote: Dear experts, Pl clarify the heat treatment requirements for SA106 Gr.B pipe I.D  to be flared and done by hot formed operation  like red hot heating with hammering of die in the pipe id  to get the required dimensions. Does it require heat treatment? Also the above said process is good engineering  practice for flaring operation of pipe?  -- 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/CADuMvPb%3DddCgS030uK6pZaqS5KnVyeHMG41Vp-rZo29%3DzRAT4w%40mail.gmail.com . ...

Dear Experts,                   During  cladding using  Hasteloy C22 consumable  on reaction chamber roll with base material 1.4776/ 30%CrMo steel  we immediately noticed during a small test clad, cracks (a lot). as per picture  Pls advise me what we could do to avoid cracks? Best Regards  Neilashkumar P  Sent from Yahoo Mail on Android -- 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/989592032.581548.1636600753004%40mail.yahoo.com .

Dear all, Can any one suggest picking and Passivation procedure for Hastelloy? After Heat Treatment and After Welding. Is it mandatory to perform Picking and Passivation? Please provide literature or Standard if any. Regards, Maulik -- 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/CAFK0MUN6exyioEi6hTNsP%2BbQ%2BFecVSsCUSWx0Sk-qY_pgqsatQ%40mail.gmail.com .

Dear experts, Pl clarify the heat treatment requirements for SA106 Gr.B pipe I.D  to be flared and done by hot formed operation  like red hot heating with hammering of die in the pipe id  to get the required dimensions. Does it require heat treatment? Also the above said process is good engineering  practice for flaring operation of pipe?  -- 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/CADuMvPb%3DddCgS030uK6pZaqS5KnVyeHMG41Vp-rZo29%3DzRAT4w%40mail.gmail.com .

Dear QA/QC     Bend and impact test failure means that you have more interpass temp during welding. And also undercuts between passes and not cleaning between passes.   We can infer the following: 1. Welder and inspector did not pay attention to interpass temp in an attempt to complete the joint faster.  2. Welder welded with high voltage arc which created undercuts on the weld joint face and did not remove those undercuts by grinding. 3. Heat input during welding was not calculated and maintained during welding. 4. Check the compatibility of filler metal used for welding this dissimilar joint.  The only way is to re weld another pqr with following corrections.  Regards, Charles.  On Fri, Nov 5, 2021, 5:53 PM QA/QC < adnanziad49@gmail.com > wrote: Dear masters  durring the mechanical tests for our WPS  1- piping B31.3  SS to DSS  TEST COUPON 2" thk 3.05 mm  in the bending test with 4 test one is failure rejected   so in this case IS IT ACCEPTABLE  ALSO FOR ANOTHER PQR   2- P...

Dear Uday,  Look at this recommendation, for the replacement you are looking for:   1. Set the corrosive environment to 425°C of SA-382 F11 Cl2 steel with cladding SS304.   2. Depending on whether the environment is oxidizing or reducing, 300 series stainless steel works well at higher temperatures.    3. To do this, select stainless steel type SS304L. Easier to weld, and less risk of IGC (intergranular corrosion) due to precipitation of chromium carbides, type M23C6.   4. Use SS 304L base material in solution annealing condition before welding.   5. Use filler material type E-308L for welding.   6. Depending on the thickness of the piece> 1", carry out PWHT of dissolving chromium carbides. Although for smaller thicknesses, the welding of the SS304L does not need PWHT. Check.   Regards,  Ramon Briceno linkedin.com/in/ramonbriceno-metalengineer De: materials-w...

Hi Uday,   Choice of S.S 304 may be correct for the said design temperature(425 Deg C). In order to keep the IGC/ sensitization factor under control use 308L welding consumables/fillers would be advisable.   It would be good to know what's the process fluid involved? If the process fluid is aggressive, then a switch to SS 316/316L would be a better choice. This would be a process engineer/metallurgical engineers' call to select 304 or other alternatives (316/316L) as needed.   Thanks   Pradip Goswami.P.Eng, IWE. Independent Welding & Metallurgical Engineering Specialist Saudi Aramco Approved Designated Project Welding Engineer (DPWR) Qatar Petroleum Approved, SME-Materials & Corrosion Engineering . Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/ Email:pgoswami@rogers.com,pradip.goswami@gmail.com Cell/Whasapp:1-905-9793232   Austenitic Stainless Steel Sensitization | Austral Wright Metals From: uday prabhu <uday31@gmail.com> Sen...

Mill tolerance for the seamless pipe is 12.50% and 0.3mm for the welded pipe. Whereas Mill tolerance for the seamless/welded fitting & flange  is 12.50%  Is standard more stringent in case of welded pipes ? Please justify. Regards Rishabh -- 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/CAFH_NRKqdyNRYK3bwDnKgd%2BUBHaXDQF6o1WMVfkhTNxNJrNEpw%40mail.gmail.com .

NO.S.S.304 WILL NOT STAND WITH HEIGHT TEMPERATURE SERVICE  THANKS AND REGARDS  SUSHIL GAUR  M.NO.9530278378  On Sat, Nov 6, 2021 at 7:19 PM uday prabhu < uday31@gmail.com > wrote: Dear Experts, Vessel MOC = SA387 GR F11 CL2 + 3mm SS.304 clading Max operating Temp = 425 C Max Pr = 20 bar (g) Can we replace above moc with SS.304. Will there be Sensitization issues a this temp ?? Regards, Uday Prabhu -- 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/eb883ea1-ba79-407e-a7bc-5197397e0496n%40googlegroups.com . -- sushil gaur -- https://materials-welding.blogspot.com/ https://www...