Materials & Welding

Please specify your material grade. On Fri, May 29, 2020 at 9:52 AM Tamizh Selvan < tamizh74@gmail.com > wrote: Dear Experts can anybody answer for the below questions.? What special processes are required on Cr alloy material welding?   With Warm Regards, S.TAMIZH SELVAN,            -- 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/CABHCQ-Er0rXT%2B%2Bd14PCw3MJE4mFfh2SJJZEvn241TKAP3C6LKA%40mail.gmail.com . -- Best Regard, Muhammad Zulfiqar Ali Mob: +966 (0) 56 089 1836 -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received ...

My question is, according to ASME section IX, if we are going to qualify a welding procedure with  a stainless steel base metal (P number 8) with a carbon steel (a P number 1), using a stainless steel filler metal .  Is it necessary to make longitudinal bent specimens to qualify the procedure? See  QW-161.5 Longitudinal-Bend Tests."Longitudinal bend tests may be used in lieu of the transverse sidebend, face‐bend, and root‐bend tests for testing weld metal or base metal combinations, which differ markedly in bending properties between (a) the two base metals, or (b) the weld metal and the base metal" Are the differences beetween these to metals considered markedly different?  If in the previous example it was decided to use a Nickel electrode which differs in ductility from carbon steel, would it be necessary to do longitudinal bent ? I am preparing to the certified welding inspector exam in my country.  Regards, -- https://materials-welding.blogspot.com/ https://w...

Section 8 for fired vessels??. Pl elaborate On Sat, 30 May 2020 8:50 pm k7moorthi, < k7moorthi75@gmail.com > wrote: 1.) An unfired pressure vessel is any type of pressure vessel that is not fired. This means that they are not exposed to combustion or burner fire. Since it is an unfired vessel, there is a lesser risk of overheating. 2.) Whichever stringent, needs to be followed and your client requirement ( project specification) is also mandatory about code selections. 3.) (a) AMSE Sex VIII - is a code & standard used for 1.) Design, 2.) Fabrication, 3.) Testing, 4.) Inspection & 5.) Certification of both Fired & Unfired                pressure vessels.       (b) API 510 - In service Pressure Vessel Inspection Code. … >The code covers inspection, repair, alteration, and rerating activities for pressure vessels             and the pressure relieving devices that protect vessels covered by the code.       (c) BIS IS 2825 : 1969 (Reformed -2017) - CODE FOR UNFIRED PRE...

Dear Vimal, What is your design requirement in B31. 3? Chapter v or chapter IX?  On Fri, May 29, 2020, 7:47 AM Vimal Kumar < jvkumarr@gmail.com > wrote: Dear Experts, As per the specified clause in subject., does it mean existing qualified welders are to be requalified..?? Kindly advise Thanks in Advance Regards Vimal Kumar -- Sent from iPhone -- 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/CAO%2BCCQVBBsVK0WYsf9-1mdk91BYE1z6Xxm3MMBwvp2bUM-JwSg%40mail.gmail.com . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this messa...

At least a dozen chromium molybdenum (CrMo) steel combinations exist. One of the more recent alloys consists of chromium, molybdenum, vanadium, niobium (columbium), and nitrogen. This material became popular for use in high-temperature applications, such as gas and coal-fired power plants. However, it is not intended to replace other CrMo types. Each alloy has its own place in the high-strength, low-alloy group of materials. On Friday, 29 May 2020 09:52:44 UTC+3, tamizh wrote: Dear Experts can anybody answer for the below questions.? What special processes are required on Cr alloy material welding?   With Warm Regards, S.TAMIZH SELVAN,            -- 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@googleg...

 Explain in brief about your requirments On Friday, 29 May 2020 09:52:44 UTC+3, tamizh wrote: Dear Experts can anybody answer for the below questions.? What special processes are required on Cr alloy material welding?   With Warm Regards, S.TAMIZH SELVAN,            -- 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/92b4d00e-88c3-427d-8482-9ebce5b6fc37%40googlegroups.com .

Dear Vimal, No, it does not say that one has to re-qualify the welders. It says that : ""b) Test weldments shall be made using the same specification and type or grade of base metal(s), and the same specification and classification of filler metal(s) as will be used in production welding."" It means if the welders have been qualified as per above conditions, no need to re-qualify the welders. Hope, your query has been answered. Thanks, Best Regards, Rajnish Dixit On Friday, 29 May, 2020, 10:47:24 am GMT+7, Vimal Kumar <jvkumarr@gmail.com> wrote: Dear Experts, As per the specified clause in subject., does it mean existing qualified welders are to be requalified..?? Kindly advise Thanks in Advance Regards Vimal Kumar -- Sent from iPhone -- https://materials-welding.blogspot....

Dear mr Ibrahim's Thank for your mail..as I  undesrand the code for unfired pressure vessel  is ASME VIII  But plz refer the trailing mail.they asked stadtda for Undired pressure vessel ..is that also same as ASME SEC VIII  or its differs..plz clarify.. On Sat, 30 May 2020, 11:16 nasr Ibrahim, < elpop102002@gmail.com > wrote: Dear S. TAMIZH ASME Section VIII is code for D esign, Fabrication, Testing, Inspection, and Certification of both fired and unfired  pressure vessels. On Friday, 29 May 2020, 09:52:35 GMT+3, Tamizh Selvan < tamizh74@gmail.com > wrote: Dear Experts, Can anyone please tell me   answer.? 1. What is the design code for unfired pressure vessel in ASME code. 2. What is the standard for Unfired pressure vessel  in ASME code. 3.    In case of conflict between Design Code and standards a...

1.) An unfired pressure vessel is any type of pressure vessel that is not fired. This means that they are not exposed to combustion or burner fire. Since it is an unfired vessel, there is a lesser risk of overheating. 2.) Whichever stringent, needs to be followed and your client requirement ( project specification) is also mandatory about code selections. 3.) (a) AMSE Sex VIII - is a code & standard used for 1.) Design, 2.) Fabrication, 3.) Testing, 4.) Inspection & 5.) Certification of both Fired & Unfired                pressure vessels.       (b) API 510 - In service Pressure Vessel Inspection Code. … >The code covers inspection, repair, alteration, and rerating activities for pressure vessels             and the pressure relieving devices that protect vessels covered by the code.       (c) BIS IS 2825 : 1969 (Reformed -2017) - CODE FOR UNFIRED PRESSURE VESSELS.       (d) PD 5500, formerly BS 5500 -----UK Rules For Unfired Pressure Vessels.  Friday, 29 May 2020 09:52:...

Dear S. TAMIZH ASME Section VIII is code for D esign, Fabrication, Testing, Inspection, and Certification of both fired and unfired  pressure vessels. On Friday, 29 May 2020, 09:52:35 GMT+3, Tamizh Selvan <tamizh74@gmail.com> wrote: Dear Experts, Can anyone please tell me   answer.? 1. What is the design code for unfired pressure vessel in ASME code. 2. What is the standard for Unfired pressure vessel  in ASME code. 3.    In case of conflict between Design Code and standards above, which shall govern? With Warm Regards, S.TAMIZH SELVAN,            -- 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....

I understand 316L with higher chrome will result in better ferrite. But specifications calls for 308L. On Fri 29 May, 2020, 21:16 Ramin Kondori, < raminkondori@gmail.com > wrote: You've made a mistake by using 308L filler metal. Change the WPS and use only 316L filler metal. Ramin  Kondori Sr. QA/QC & Welding Engineer ----------------------------------------------------------- PG-Dip. in Welding Engineering   (I WE  AT  0070 ) BSc. in Civil Engineering (IUT) BGAS  Painting Inspector ASNT Level I&II                          On Tue, May 26, 2020 at 10:20 AM Vinay Thattey < vinay.thattey@gmail.com > wrote: Dear Friends ;  For some technical reasons the expected ferrite   after completion of circumferential welding for SS to SS ( ASTM-A -240 SS 316 rolled pipe )  is 7 to 8 . We R using 308L / 316 L filler and obtained result is max 5 . pl advice . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received t...

You've made a mistake by using 308L filler metal. Change the WPS and use only 316L filler metal. Ramin  Kondori Sr. QA/QC & Welding Engineer ----------------------------------------------------------- PG-Dip. in Welding Engineering   (I WE  AT  0070 ) BSc. in Civil Engineering (IUT) BGAS  Painting Inspector ASNT Level I&II                          On Tue, May 26, 2020 at 10:20 AM Vinay Thattey < vinay.thattey@gmail.com > wrote: Dear Friends ;  For some technical reasons the expected ferrite   after completion of circumferential welding for SS to SS ( ASTM-A -240 SS 316 rolled pipe )  is 7 to 8 . We R using 308L / 316 L filler and obtained result is max 5 . pl advice . -- 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 ...

I  HAD A doubt. In one of my job, we made patch of 100 mm. RT was done and the results were 100% satisfactory. Can you please suggest whether the patch of 100 mm is allowed or not. Is that mentioned in any code or so. About spin hole, it is already  mentioned in code under UW 34. The spin hole is allowed till 60 mm but we made a patch of 100 mm and did RT whose results were satisfactory. Regards, Arun  On Thursday, September 6, 2012 at 9:16:10 AM UTC+5:30, hemant wrote: Dear Sir, What is the minimum  & Maximum size of spin hole plate as per code reference. Pls reply me.   HEMANT SUTHAR QA/QC CEPL-SILVASSA 9712973092I    -- 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 ...

You are advised to refer API RP 934 C  On Fri, May 29, 2020, 1:22 PM Chandan Gupta < crgupta90@gmail.com > wrote: Hi All, Kindly suggest on following points. What is difference between ISR & DHT and why it is important? DHT can be performed in lue of ISR? If yes, what kind of precautions need to be taken care? DHT will have less cost and less time consuming cpmpared to ISR? Br, Chandan -- 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/CAP2dnyGhy8qgvqONkcVcEe7_KwbWpH44RCAnLgqfXFqnb7CJ9Q%40mail.gmail.com . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/...

Hi All, Kindly suggest on following points. What is difference between ISR & DHT and why it is important? DHT can be performed in lue of ISR? If yes, what kind of precautions need to be taken care? DHT will have less cost and less time consuming cpmpared to ISR? Br, Chandan -- 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/CAP2dnyGhy8qgvqONkcVcEe7_KwbWpH44RCAnLgqfXFqnb7CJ9Q%40mail.gmail.com .

Dear Experts, Can anyone please tell me   answer.? 1. What is the design code for unfired pressure vessel in ASME code. 2. What is the standard for Unfired pressure vessel  in ASME code. 3.    In case of conflict between Design Code and standards above, which shall govern? With Warm Regards, S.TAMIZH SELVAN,            -- 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/CABHCQ-G%3D6KHRefXiVVEZFJcDmMm7%3DM2vKkGYQhizCyVGU27BOg%40mail.gmail.com .

Dear Experts can anybody answer for the below questions.? What special processes are required on Cr alloy material welding?   With Warm Regards, S.TAMIZH SELVAN,            -- 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/CABHCQ-Er0rXT%2B%2Bd14PCw3MJE4mFfh2SJJZEvn241TKAP3C6LKA%40mail.gmail.com .

Dear Experts, As per the specified clause in subject., does it mean existing qualified welders are to be requalified..?? Kindly advise Thanks in Advance Regards Vimal Kumar -- Sent from iPhone -- 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/CAO%2BCCQVBBsVK0WYsf9-1mdk91BYE1z6Xxm3MMBwvp2bUM-JwSg%40mail.gmail.com .

Dear Charles, The choice of welding parameters like current and Voltage is dependent on the choice of welding process and consumable used and not on Carbon Equivalent. Carbon equivalent is a weldability factor which gives you sense of materials conditioning prior to welding like preheat temperature and during welding and after welding for the avoidance of welding issues like cracking. Regards Rems Sent from Yahoo Mail on Android On Wed, 27 May 2020 at 16:22, charles <charlesvj@gmail.com> wrote: Dear experts, Pl. Provide the calculation for finding welding parameters like current and voltage if the carbon equivalent of steel is known?. Does this work good for alloy steels also? Regards, Charles Jacob -- 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 ...

If u SS310 filler metal, u may land into fissure because of 310 is fully austenitic steel. No pwht is required for dissimilar metal ( stabilization treatment) On Thu, 28 May 2020 3:23 pm atul khatri, < atul.mnnit@gmail.com > wrote: Stress relaxation cracking (SRC) could be a reason to have PWHT  for thicker (20mm and above)  stabilized stainless steel grades (mainly H grades)  when operating between 427 deg c to 871 deg c. if in your case,  above condition doesn't meet than no require to have any heat treatment. In case  PWHT is required than shall be done near to 890 deg c for these SS grades. Preheat is not required in any circumstances. If you are welding two pipes than avoid using welded pipes ,since welds in thicker SS grade material (as mentioned above) have more chance of SRC. Thanks and Regards Atul Khatri On Sat, May 23, 2020 at 10:17 AM Kural < kuralen@gmail.com > wrote: what is design and operating temperature of 347 ? is it pressure application ? Stabilizing...

Excellent photos, well done, D Harvey

SS welded regions readily rust in the presence of moisture ,unless iron from welding fume deposits are immediately removed. It is a very common issue and shows a lack of attention to post welding clean-up. At least wire brushing is the minimum necessary application. The rusting is the oxidation of the condensed iron on the SS weldment surface and surrounding zone. D Harvey, PhD.

Appears to be fluid marks due to contamination or possibly poor pickling done. On Thu, 28 May 2020, 10:46 Vinod Kataria, < vinod.kataria@blissanand.com > wrote: Dear Expert, We have received an email from our customer with pictures showing "rust" on the stainless steel (SS-316L) chambers.  Can anyone please tell me what you see in these pictures from your perspective?     -- 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/TY2PR0101MB29421148FFC32992DCB565C5878E0%40TY2PR0101MB2942.apcprd01.prod.exchangelabs.com . -- https://...

It is installed in Oil Refinery…..   Regards, Vinod Kataria     From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of gulzar ali Sent: 28 May 2020 13:34 To: materials-welding@googlegroups.com Subject: Re: [MW:30922] SS-316L Rusting     What type fluid service?        On Thu, May 28, 2020, 10:22 AM 'Karthik' via Materials & Welding < materials-welding@googlegroups.com > wrote: It might be due to poor cleaning/pickling process or no pickling and or improper picking/curing time Thanks& Regards,   (Karthik) Karthikeyan.S M: +66-892512282 E-mail : karthik6684@yahoo.com On Thursday, May 28, 2020, 12:16:41 PM GMT+7, Vinod Kataria < vinod.kataria@blissanand.com > wrote:     Dear Expert, We have received an email from our...