Re: [MW:8846] UTS

Dear Mr.Patel,   Supplementary Essential  variables will play a esential role when Low Temperature Applications come in to an act. Repeated exposure to the heat or uncontrolled heating and colling, will affect only the toughness of the material. Loss in  toughness will reduce the Impact property of the Material. It means there will be shift in the DBTT( Ductile to Brittle Transition Temperature). Loss in Ultimate Tensile property of the Material is negligible. Hence , Heat Input is considered as  a Supplementary Essential Variable.   With Regards, S.Ayyappan   --- On Tue, 21/12/10, Bhavesh Patel <bhaveshpatel.me@gmail.com> wrote: From: Bhavesh Patel <bhaveshpatel.me@gmail.com> Subject: Re: [MW:8844] UTS To: materials-welding@googlegroups.com Date: Tuesday, 21 December, 2010, 4:25 AM Dear Manpreet,   Yes, I agree with the above explanation but steel i have one question to you why heat input is supplemetary essential variable in ASME code. where as mechanical propeties like UTS & YS are more affected by  heat input as specified in artical attached by Kathalingam babu, so as per attached artical it shall be essential variable.   Kindly suggest.     Regards, Bhavesh On Mon, Dec 20, 2010 at 8:29 AM, manpreet <manpreetsin88@rediffmail.com> wrote: Dear Bhavesh, With due respect, Heat Input depends on mechanical properties such as Toughness, Tensile and yeild strength and Hardness. For toughness, it's not certain, to an extent increasing then decreasing, but for others it has monotonic relationship. With refernce to the steel mentioned, ASTM 516 gr.70 (C-Mn-Si), Tensile strength of Weld metal would decrease due to coarsening of structure and fromation of grain boundary ferrite, When SMAW used, with Higher Heat Input, C-Mn-Si  content would reduce therefore, Ultimetaly it would also effect Tensile properties of Weld metal. If you still disagree with above explanation, Please provide some basis to substantiate your claim. Regards Manpreet Singh Welding Engineer On Sun, 19 Dec 2010 12:18:50 +0530 Bhavesh Patel wrote >I totaly disagree with manpreet because heat input only affects the >tougness property of material. As far as i know UTS never depends on >the welding processes. BHAVESH > >On 12/18/10, manpreet <manpreetsin88@rediffmail.com> wrote: >> Hi, Heat Input is goint to be the key factor in this case, which would be >> less for GTAW.so for GTAW, there would be more UTS.Due to limited >> information, this is only thing i can predict, else more info like heat >> treated condition and weld joint, would be needed.RegardsManpreet >> SinghWelding EngineerOn Fri, 17 Dec 2010 8:43:49 ,Harish Kannepalli >> &lt;harishkannepalli@gmail.com>; wrote >> In theory both will have same UTS. But while testing, slight variation may >> be there due testing conditions. >> 2010/12/16 Shaunak Upadhyay &lt;shanupadhyay@gmail.com>; >> 1) &nbsp;Material Specifcaiton: SA 516 GR 70&nbsp; &nbsp; Size: 6.0 mm >> thk&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;300 mm Length x 300 mm >> Width&nbsp; &nbsp; Process: GTAW&nbsp; &nbsp; Consumable: ER70S-22) >> &nbsp;Material Specifcaiton: SA 516 GR 70&nbsp; &nbsp; Size: 6.0 mm >> thk&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;300 mm Length x 300 mm >> Width&nbsp; &nbsp; Process: SMAW&nbsp; &nbsp; Consumable: E7018Which test >> piece have more UTS in these two processes.Regards,Shaunak Upadhyay--To post >> to this group, send email to materials-welding@googlegroups.comTo >> unsubscribe from this group, send email to >> materials-welding+unsubscribe@googlegroups.comFor 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.-- >> >> regards, >> Harish. >> -- To post to this group, send email to materials-welding@googlegroups.comTo >> unsubscribe from this group, send email to >> materials-welding+unsubscribe@googlegroups.comFor 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-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-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-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-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.

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