I have done a lot of welding of carbon steel to copper nickel 90-10. Ad We supply Inconel 625 600 825 welding electrode filler wire. American Welding Society AWS.
This article describes the welding and brazing of copper-nickel to austenitic stainless steels.
Before starting the welding process lets make a list of what you will need. Stocks in huge qty. I have done a lot of welding of carbon steel to copper nickel 90-10. The nickel or nickel deposit can be welded to the copper alloy using a nickel filler metal.
