Solder Copper Wire To Aluminum Sheet

Make sure that you add some flux to the area to be soldered.

Solder copper wire to aluminum sheet.

Soldering aluminum is not like soldering copper. To join copper and aluminum wires you have to twist them together and install a wire nut. Soldering works by capillary action the solder is drawn into the joint by the heat and flux. You either need a very aggressive flux to strip the oxide not to mention damaging your soldering iron tip and the copper or some method of mechanically stripping the oxide layer and keeping oxygen away from it the layer re forms immediately until you have completed the joint.

Use constant slow movements when applying the iron solder so that the outcomes can be even. Make sure that the soldering iron touches both the aluminum wire and joint. Heating from the other side of the aluminum metal. Heat the solder enough so that it is melted evenly along the joint being soldered.

Wrap the wire around the area to be soldered. Low temp 350 degrees with no worry about melting the aluminum or too much he. You can use a soldering iron for joining aluminum wire but other jobs will require the use of a torch. Multi sol mutli metal solder copper to aluminum fitting on an aluminum coil.

If torch use is not feasible in your work space try a 150 watt soldering iron. Successfully soldering aluminium wire is hard. In this case i m soldering a copper reducer to a piece of copper pipe. Even with the right flux and solder combination you won t achieve soldering if the aluminum isn t hot enough to accept the solder alloy.

A wire nut is a cone. Then carefully run the soldering iron along the wire. Soldering to aluminum is very difficult and quite different than soldering to copper or solder coated surfaces. No you can t solder aluminum.

It s not enough to just heat up and melt the solder. The issue with aluminum is the oxide on the aluminum itself and it needs to be removed so the solder can make a electromechanical bond to the shield itself. Typically a low temperature torch is used with a flame tip that reaches 600 to 800ºf 315 425ºc.