I am facing a problem as I required to propose a solution for welding a dredger tugger shaft(160 mm dia)  (42CrMo4) to a winch drum  ( FE 360 )
( 40 mm thickness) .
The problem is I can not find these materials in ASME  so I can not define the properties of neither of them . all recommendation I get is to pre-heat 200 C and PWHT (500-600 ) .
Does anyone can give me a hand in this issue