What is the best filler metal and welding method to weld 36Mn5 steel to 42CrMo4 steel?

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Parham Kabirifar

i am not an expert in this field but as a general idea i suggest that you gather a literature review, make a table for your self to determine the shielding gases previously used and of course the method, then you could decide on them and i believe availability would be also important, you may get same result using different methods (scientifically i should emphasis that i am not sure, i just wanted to help).

Reza Faezi

Thank you dear Parham! I appreciate your answer

my pleasure.