Materials & Welding

Mr. kanagarajan please insure the following points 1. The piping class i.e. pipe thickness and rating 2. second check the piping matergaly if the one cs and other high alloy such as ss etc then in ss some specicaly requiremetn such as DM water etc regards, satyendra On 12/28/11, Kanagarajan G < g.kanagarajan@gmail.com > wrote: >> >> Hi, >> >> Shall we carryout two different hydro pressure packs together in one hydro >> test for the maximum one. >> >> For example, One test pack 30 PSI and another test pack 200 PSI.(Material >> same) >> >> Regards, >> >> Kanagarajan.G >> > > -- > 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 grou...

Dear HAREESH, What was the welding position? If It was not 1G or 2G which on of the root samples failed (acc. to he test sketch in ASME Sec. IX)?   Regards On Sat, Dec 31, 2011 at 8:35 AM, HAREESH K V < hareesh13h@gmail.com > wrote: Dear Sir,   Advance happy new year to all.   I have done a PQR(As per ASME Sec ix) of 6", Sa106 GrB to Sa 312 TP 316L. One of the root bend of the same failed.   Consumable used: ErNiCr-3.    Tesile strength T1=507 and T2=514MPa(Min Rqd 415MPa);   Hardness: Sa106 Gr B side p.metal: 160,151,147 Sa106 Gr B side HAZ:160,156,156 Weld: 193,170,165 Sa312 TP316L P.metal: 175, 175,181 Sa312 TP316L HAZ: 165,151,151 Face bends are satisfactory.   One root bend satisfactory.   Please give me the possible reasons and the precautions on further doing the PQR.   Regards,   Hareesh K V -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsu...

Dr Dilintas and Mr. Arora,   I am referring to Sec-II, Pt-D, 2010 edition( effective date 01 July). This material is included in Sec-II Pt-A, e.g SA 213, but till 01 July, P-92 material was not included in the stress tables , in Sec-II, Pt-D.   SAME code case  2179-7 (approval date Jan, 2009) provides details on the stress value of this steel, including compositions and heat treatment.   I'm not sure about the updates, as I don't have them handy, I absence of code updates one could follow the above code case.   Thanks.     Pradip Goswami,P.Eng.IWE Welding & Metallurgical Specialist & Consultant Ontario,Canada. Email-pgoswami@ sympatico.ca , pgoswami@quickclic.net   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of george.dilintas@gr.bureauveritas.com Sent: Friday, December 30, 2011 5:41 AM To: materials-welding Subject: Re: [MW:13366] Room T...

Dear Sir,   Advance happy new year to all.   I have done a PQR(As per ASME Sec ix) of 6", Sa106 GrB to Sa 312 TP 316L. One of the root bend of the same failed.   Consumable used: ErNiCr-3.    Tesile strength T1=507 and T2=514MPa(Min Rqd 415MPa);   Hardness: Sa106 Gr B side p.metal: 160,151,147 Sa106 Gr B side HAZ:160,156,156 Weld: 193,170,165 Sa312 TP316L P.metal: 175, 175,181 Sa312 TP316L HAZ: 165,151,151 Face bends are satisfactory.   One root bend satisfactory.   Please give me the possible reasons and the precautions on further doing the PQR.   Regards,   Hareesh K V -- 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 t...

Please read the ASME BPVC SEC-IX , QW- 200.4 Combination of Welding Procedures On Fri, Dec 30, 2011 at 11:27 PM, Madhusudan Rout < madhusudan.rout@gmail.com > wrote: Dear Experts,             I need the coorect clause fro deletion of process which will be use for structural fillet wed, Is it mention on any International Standard, ASME or Shell DEP, here Our client disagree with this piont , if Wps with GTAW+ SMAW. Only SMAW can not use. I need some refrence form you. Thanks & regards Madhusudan Rout. On 12/30/11, george.dilintas@gr.bureauveritas.com < george.dilintas@gr.bureauveritas.com > wrote: > Yes you do can > Best regards > Dr Georgios Dilintas > Authorized Nuclear Inspector > Authorized Inspector Supervisor > HBS Regional Technical Manager > > > ----- Original Message ----- > From: Madhu [ madhusudan.rout@gmail.com ] > Sent: 29/12/2011 06:07 PST > To: "Materials & Welding" < ma...

Dear Experts, I need the coorect clause fro deletion of process which will be use for structural fillet wed, Is it mention on any International Standard, ASME or Shell DEP, here Our client disagree with this piont , if Wps with GTAW+ SMAW. Only SMAW can not use. I need some refrence form you. Thanks & regards Madhusudan Rout. On 12/30/11, george.dilintas@gr.bureauveritas.com < george.dilintas@gr.bureauveritas.com > wrote: > Yes you do can > Best regards > Dr Georgios Dilintas > Authorized Nuclear Inspector > Authorized Inspector Supervisor > HBS Regional Technical Manager > > > ----- Original Message ----- > From: Madhu [ madhusudan.rout@gmail.com ] > Sent: 29/12/2011 06:07 PST > To: "Materials & Welding" < materials-welding@googlegroups.com > > Subject: [MW:13363] Regarding Deletion of welding Process. > > > > Dear ALLExperts, > > I badly need your help for Deleti...

Dear Martin: Attached file will be helpful... Regards Ramin  Kondori    QC / Welding Engineer           IWE AT 0070     On Thu, Dec 29, 2011 at 5:44 PM, sudhakar kuppuswamy < mechsudhakar@gmail.com > wrote: Dear Mr Martin,  I am glad to write about DSS on this group,It is always good to understand the metallurgy of DSS before  welding.            As we all know DSS are two phase alloys i.e 50% ferrite (BCC structure)& 50 % Austenite (FCC structure). The weld joint (weld metal +HAZ) shall also contain the same proportions after welding, but achieving these proportions is a nightmare..!!!                     Usage of  DSS materials is particularly meant where Chloride stress corrosion cracking (CI SCC)& pitting corrosion cracking resistance are required.          If 50:50 phase balance is not achieved during welding the loss of properties can be acute.          If ferrite content goes high on the weld joint, it may loss the toughness properties  and if austenite con...

Yes ..I agreed with Mr. Izad  .... Suresh On Thu, Dec 29, 2011 at 1:57 PM, hizad idris < hizad.idris@gmail.com > wrote: Dear Vinod,   If still leaking after re-expand, my suggestion to plug off the tube, if the performance still within the required coolers performance. Normally , cooler have over design up to 20%. Need to calculate the cooler performance with the remaining tube, after plug off. -izad-   On Wed, Dec 28, 2011 at 9:40 AM, Vinod Jotwani < poojvin@yahoo.com > wrote: Dear Experts,   We have one of our fin fan cooler leaking from tube to tubesheet joint. The tube material is Duplex stainless steel.   We would like to carry out re-expansion of the tubes, your advise is needed for %age expansion allowed when these tubes are to be re-expanded. The tubes are in operation since last one year in Sour Water Recovery Unit ( H2S service).   Also if some body can share their experience in case of leakage even after re-expansion how to repair the tube to...

Yes you do can Best regards Dr Georgios Dilintas Authorized Nuclear Inspector Authorized Inspector Supervisor HBS Regional Technical Manager ----- Original Message ----- From: Madhu [ madhusudan.rout@gmail.com ] Sent: 29/12/2011 06:07 PST To: "Materials & Welding" < materials-welding@googlegroups.com > Subject: [MW:13363] Regarding Deletion of welding Process. Dear ALLExperts, I badly need your help for Deletion welding Process for Using fillet welding Structural. I have Qualified W.P.S (GTAW-root/hot+SMAW -fill/ cap)for Piping welding as per SEC-IX & its qualified for fillet in all dia/size/ thickness & diameter as per SEC-IX. Can I use only SMAW process for Fillet welding In structural or Only GTAW process can be used. Or I have to Use both GTAW+SMAW process. Kindly Enlighten me regarding this matter or any code clause I hav...

Check in ASME section II-A and II-D Best regards Dr Georgios Dilintas Authorized Nuclear Inspector Authorized Inspector Supervisor HBS Regional Technical Manager   From: Ved Bhushan Arora [vbarora48@gmail.com]   Sent: 30/12/2011 09:52 ZE5B   To: materials-welding@googlegroups.com   Subject: [MW:13365] Room Temp/High temp Properties & allowable stresses in P92 pipes Dear All   I need the P92 pipe material properties , physical , mechanical, high temp & allowable stresses etc.   Thanks   Ved Bhushan Arora -- 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 docu...

Dear All   I need the P92 pipe material properties , physical , mechanical, high temp & allowable stresses etc.   Thanks   Ved Bhushan Arora -- 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.

Dear Sir,   P355NL2 is low carbon steel for pressure vessels at low temperature applications, material delivered according to EN 10028-3 (Flat products made of steels for pressure purposes - Part 3: Weldable fine grain steels, normalized) . As the title of the material specification already mentions it has good welding properties like all low carbon steels because of low carbon content (<0,18%). All welding processes are possible, you only have to take care about layer thickness and heat input during welding in case you need high impact values at low temperature. We normally weld this material with a standard SG3 type solid welding wire (GTAW / GMAW / SAW).   Met vriendelijke groeten / Best Regards   Herman Pieper   Pieper Quality Support & Inspection Phone: +31 (0)521 380083 Fax:     +31 (0)84 7539225 Cell:     +31 (0)6 51691215 www.pieper-qsi.nl   Van: materials-welding@googlegroups.com [mailto:materials-welding@...

Dear Mr Martin,  I am glad to write about DSS on this group,It is always good to understand the metallurgy of DSS before  welding.            As we all know DSS are two phase alloys i.e 50% ferrite (BCC structure)& 50 % Austenite (FCC structure). The weld joint (weld metal +HAZ) shall also contain the same proportions after welding, but achieving these proportions is a nightmare..!!!                     Usage of  DSS materials is particularly meant where Chloride stress corrosion cracking (CI SCC)& pitting corrosion cracking resistance are required.          If 50:50 phase balance is not achieved during welding the loss of properties can be acute.          If ferrite content goes high on the weld joint, it may loss the toughness properties  and if austenite content goes high weld joint will loss CI SCC resistance.          During welding ,the DSS weld metal solidify  essentially as 100 % ferrite ,at high temperatures around 1300°C the Austenite nucleates and grows with the help...

Dear ALLExperts, I badly need your help for Deletion welding Process for Using fillet welding Structural. I have Qualified W.P.S (GTAW-root/hot+SMAW -fill/ cap)for Piping welding as per SEC-IX & its qualified for fillet in all dia/size/ thickness & diameter as per SEC-IX. Can I use only SMAW process for Fillet welding In structural or Only GTAW process can be used. Or I have to Use both GTAW+SMAW process. Kindly Enlighten me regarding this matter or any code clause I have to follow ( ASME-B31.3 & Shell DEP Standard.) Thanks & Regards Madhusudan Rout. & Wishing All of you & Your Families A Healthy & Prosperous New Year. -- 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 gr...

Check the Pipe system rating(pipe class).If both are same technically you can go ahead with hydrotesting together.But still you need to get the designers approval. On Wed, Dec 28, 2011 at 11:08 AM, Kanagarajan G < g.kanagarajan@gmail.com > wrote: Hi,   Shall we carryout two different hydro pressure packs together in one hydro test for the maximum one.   For example, One test pack 30 PSI and another test pack 200 PSI.(Material same)   Regards,   Kanagarajan.G   -- 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...

Martin,   The only way if control the O2 level. Less than 0.05%   The back purge for stainless steel and nickel alloys shall reduce the oxygen level below 0.05%. An oxygen analyzer should be used to determine the oxygen content inside the pipe during purging.   Sure G48 will pass.   With Kind Regards,   S.Elumalai. From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Martin Prad Sent: Thursday, December 29, 2011 9:58 AM To: materials-welding@googlegroups.com Subject: RE: [MW:13358] RE: 13349] Oxygen level in purging gas during welding of duplex stainless steel   Dear Goswami,   Thanks for your detail email as always. A pitting corrosion test to G48 shall be carried out. I am afraid a test reslut can not pass in the root part. Just looking a best practical solution what % of gas mixes is best to use as purging. There is an Oxy Monitor from W...

We have very old shell and tube exchanger (30 years old) which has the following material. We need recheck with design calculation, however we are unable find the specification for these materials. Can anybody provide where can I get the allowable stresses and mechanical properties of this material, particularly we are looking for yield stress value  of following material at 50 °C.   I tried to contact   German Iron and Steel Institute (VDEh)     @ Heinz-Friedrich.Hach@vdeh.de , but no response ( http://www.stahl-online.de/english/Stahlinstitut_VDEh/Standards.php?highmain=5&highsub=0&highsubsub=0 ) Plate material – TT st E36 SEW 089 (Google search ~ nearest equivalent SA 537 cl 1 ) Pipe material – TT st 35N SEW 680 (Google search ~ nearest equivalent SA 333 Gr 1/6 )

Dear Vinod,   If still leaking after re-expand, my suggestion to plug off the tube, if the performance still within the required coolers performance. Normally , cooler have over design up to 20%. Need to calculate the cooler performance with the remaining tube, after plug off. -izad-   On Wed, Dec 28, 2011 at 9:40 AM, Vinod Jotwani < poojvin@yahoo.com > wrote: Dear Experts,   We have one of our fin fan cooler leaking from tube to tubesheet joint. The tube material is Duplex stainless steel.   We would like to carry out re-expansion of the tubes, your advise is needed for %age expansion allowed when these tubes are to be re-expanded. The tubes are in operation since last one year in Sour Water Recovery Unit ( H2S service).   Also if some body can share their experience in case of leakage even after re-expansion how to repair the tube to tube-sheet joint. For information the header is welded constuction.( Ref attached file )     Thanking you,   Vinod     ...

Dear Goswami,   Thanks for your detail email as always. A pitting corrosion test to G48 shall be carried out. I am afraid a test reslut can not pass in the root part. Just looking a best practical solution what % of gas mixes is best to use as purging. There is an Oxy Monitor from Weld-Tech (Finland Company) to monitor the O2 level in purge gas. I will try to summirize your below reccommendation to use on this occasion.    Very kind regards, Martin.   From: pgoswami@quickclic.net To: materials-welding@googlegroups.com Subject: [MW:13352] RE: 13349] Oxygen level in purging gas during welding of duplex stainless steel Date: Wed, 28 Dec 2011 17:44:09 -0500 Martin,   Nice to hear from you after quite a while..I have come across this question in the past while qualifying procedures for duplex S.S, on the strict requirements of oxygen, in purge gas. Please see below the extracts/recommenda...