Re: [MW:13747] How to reduce SA517 hardness

Hi   Please specify what grade and thickness of SA517 you are using. ALso how can your interpass temp. be lesser than your preheat ??? What hardness values you had got in the weld, HAZ and PM during the PQR? Have you checked the as welded hardness of the consumables E11018M?   Regards   Prem Nautiyal --- On Sun, 2/19/12, pradip kumar sil <pradipsil@gmail.com> wrote: From: pradip kumar sil <pradipsil@gmail.com> Subject: [MW:13739] How to reduce SA517 hardness To: materials-welding@googlegroups.com Cc: "pgoswami" <pgoswami@quickclic.net> Date: Sunday, February 19, 2012, 2:13 PM Dear Sir, We are using one material which is equivalent to SA-517 material ( Pressure  vessel plates, alloy steel, high strength, quenched & tempered ). with electrode E-11018M. Climatic condition of the environment is minus 5 degree Centigrade to plus six degree Centigrade.Parent material hardness is 230 BHN but weld material hardness is coming approx 400 BHN  which is not acceptable. We are properly maintaining preheating  i.e 250 degree Centigrade as well as interpass temperature is 150 degree centigrade. Pls guide me how can i reduce this material hardness. Regards Pradip -- 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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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.