Welding/brazing Stainless steel to 4130 steel
Posted: Tue Oct 22, 2013 9:02 pm
I am building an airplane, and in the Hangar I don't have access to electricity so the majority of my welding has been Oxy/Acetelyne the first time I ran into this situation I had a Henrob troch and used a mild steel filler rod and it welded just fine, carry the plane around by the part and it won't separate, I got a crack in the Henrob and have been using a Victor torch to weld the rest of the plane with no problems. The problem is I now have to weld stainless steel to 4130 again and I can't find a filler to join the two. Mild steel rod won't work, silver solder lets loose instantly and silicon Bronze doesn't attempt to hold either. I am far from new at welding but this is the first time I have run into this problem what would be the best filler metal for joining these two metals, they are .035 inch thick.