Mig Welding Copper To Steel

There are two issues with welding copper and stainless steel.

Mig welding copper to steel.

In welding copper sheets the heat is conducted away from the welding zone so rapidly that it is difficult to bring the temperature up to the fusion point. Safe for our use the mds sheet shows it is 96 copper 2 silicon 1 manganese 1 nickel. Mig brazing is a welding process that has been around for years and is gaining popularity with professionals and hobbyists alike due to the benefits it can offer especially with silicon bronze filler metal. It is often necessary to raise the temperature level of the sheet in an area of 6 0 to 12 0 in.

152 4 to 304 8 mm away from the weld. Stainless steel melts at around 1400 c while copper melts at 1085 c that s a difference of 315 c this makes forming a puddle of the two metals extremely difficult. He said most guys mig welding copper use silicon bronze wire but the color doesn t match. 100 de ox copper wire is available but pricey.

First up the two metals have substantially different melting points. I might buy some silicon bronze wire to try that. I ordered a two pound spool just to try it. I use the term silver brazing instead of silver solder because technically anything over 840 degress f is brazing.

So here is the video with a few tips on silver brazing copper to steel and brazing stainless steel bolts to some copper washers. While using a tig welder is the best option for welding steel to copper that doesn t mean that it s an easy process because of the properties of a steel to copper weld and the technicality of running a tig welder performing a steel to copper weld can be a complex operation.