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----- Original Message -----From: ESMAT SSent: Tuesday, June 26, 2012 1:47 PMSubject: Re: [MW:14692] Dissimilar Welding: 5Cr-0.5Mo Furnace Tube with SS304 Guide pinI face this problem but with ss316 to p91 (9cr) in steam line and the welding was buttering procedure with the higher grade which is p91(9cr) filler.Generally the dismiler Welding should be with the higher grade material according to the code .
Sent from my iPhone--Dear All,We have to weld an Ø1½" SS 304 guide pin pipe to Ø4" 5Cr furnace tube. I was unable to find any WPS in our records. Some research I did revealed that I should be using SS 309 for the welding. What I am concerned is whether Stress relieving is necessary? I learned from somewhere that it will lead to sigma phase creation and carbide percipatation in austenitic stainless steel.Your comments / help is much appreciated.Regards,Muhammad Ali--
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