Is soldering aluminum with wire really that reliable? Let's check

Welding aluminum is not as difficult as you might think. It turns out you can weld aluminum without any argon welding! Now, in order to solder aluminum parts, be it a radiator, a bicycle frame or your favorite pan, you don’t have to look for a specialized workshop and spend a lot of money. Now you can solder everything at home! But is this connection really that reliable?
Is soldering aluminum with wire really that reliable? Let's check

The connection is no worse than a welded one. And certainly more reliable than any cold welding. It takes practice to achieve perfect results. Spend a little time and practice on any scraps of aluminum pipes and the result will not be long in coming.

For welding I needed:


  • Wire for soldering aluminum -
  • Gas-burner -

I ordered the wire from Aliexpress. This tubular solder contains flux in the core. It doesn't cost much. For 20 rods, 50 cm long and 2 mm thick, I paid 4.90 bucks.
How to solder aluminum and more

I bought the burner in my store, but you can also order in China. I came across a torch designed specifically for soldering with low-temperature solders.Heating temperature 1300 degrees Celsius. I bought the burner for $8.
How to solder aluminum and more

How to solder aluminum and more

DIY aluminum soldering


Before soldering a broken part, I strongly advise you to practice on scraps of tubes. You need to learn to understand when a part is warm enough to be soldered and at the same time, you need to not overheat the part. Otherwise, it can be burned.
I practiced cutting 8mm tube. I made 2 cuts and started cooking. The first attempt failed. I overheated the part and the cut turned into a large hole.
How to solder aluminum and more

The second attempt was more successful. True, there were small sagging marks on the tube. If desired, they can be easily cleaned with sandpaper.
How to solder aluminum and more

Now I'll try a more complex type of soldering. I'll try to solder 2 tubes. To do this, I cut the tube at an angle and fixed it in a vice.
How to solder aluminum and more

If you slightly heat the part, the solder will not spread, but will collect into balls.
How to solder aluminum and more

The solder spread over the seam and a strong connection was obtained. All that remains is to warm up the bottom seam.
How to solder aluminum and more

After welding, I will clean the corner from flux residues and aluminum deposits. It turned out to be quite a beautiful connection.
How to solder aluminum and more

Now I'll test it for strength.
How to solder aluminum and more

The tube was disconnected. I heated the bottom seam weakly, but the top one turned out to be a tough nut to crack. The crack did not go along the seam, but went to the side.
How to solder aluminum and more

Next I’ll try to weld a profile aluminum pipe. Its walls are thicker than the previous tube, so it takes longer to warm it up.
How to solder aluminum and more

I slightly warmed up the profile and hurried to apply solder. The result was such terrible influxes.
How to solder aluminum and more

Then I increased the power of the torch and heated the solder a little more. And then it all spread over the part and filled the cut.
How to solder aluminum and more

Due to the large amount of solder inside the tube, there were nodules in the corners.
How to solder aluminum and more

I cleaned up the soldering area and this is what happened.
How to solder aluminum and more

The seam turned out great. If you clean it with finer sandpaper, it will become almost invisible.
Finally, I decided to try soldering a steel screw and nut.
How to solder aluminum and more

The connection turned out to be very strong.
How to solder aluminum and more

I tried to unscrew the nut with pliers. In the end, I just licked off the entire thread of the bolt, but the nut still did not budge.
How to solder aluminum and more

When soldering, I noticed that by the color of the flame you can determine whether the part has warmed up or not. The flame of the burner is blue, and when the part warms up, the flame turns red. This is the best time to apply solder.
I really liked the method. Personally, when I learned about such a simple and accessible soldering method, I was incredibly surprised. New ideas have appeared for my homemade products.
Take the method into service and use it, friends! See you again!

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