Welding problem: the problem of welding aluminum wire with lead
About M51 low temperature wire with M51-F welding wire flux operation video, this should be a good solution to this problem you said, and the relationship is not as you said and aluminum materials, but by welding the wire itself to decide.
Should solder it with solder? Lead poisoning! In addition, the welding is not tight, and solder (solder paste) is also concerned, and its role is to clean the joints, to ensure the quality of brazing, please change the solder try.
This is not welded by lead. It is welded with a special solder, M51 tin wire. It is specially used for soldering M51- welding
