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
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