Soldering various metals with wire from Aliexpress

Soldering various metals with wire from Aliexpress

Aliexpress has excellent flux-cored wire called welding wire. With its help you can solder not only aluminum, but also almost all metals!
This three-meter wire with a melting point of 360 degrees Celsius will cost approximately $11.54.
Soldering metals with aluminum wire from Aliexpress

If you search, you can find the same wire much cheaper than the previous one: for 10 meters they ask for only 10 dollars. True, the melting point here is higher, reaching 490 degrees Celsius. Therefore, if the first wire is suitable for thin aluminum, then this one will be convenient for welding thick metal.
Soldering metals with aluminum wire from Aliexpress

This wire is in high demand among residents of the former USSR, apparently because many Kulibins live there.

What is needed for soldering aluminum and other metals?


At home you only need three things:
  • Welding wire from Aliexpress -
  • Gas-burner -

Soldering process step by step:


Let's weld the fitting with the transition to the hose.
Soldering metals with aluminum wire from Aliexpress

We fix the products in a vice, take the wire and a gas cylinder with a burner.
Soldering metals with aluminum wire from Aliexpress

Important! It is necessary to heat the parts to be connected, but not the wire. Therefore, we light the burner and warm up the parts thoroughly.
Soldering metals with aluminum wire from Aliexpress

As soon as everything has warmed up well, touch the wire to the joint. If it spreads, then we proceed to soldering, distributing the solder evenly along the joint. If the temperature is not enough, we continue to heat.
Soldering metals with aluminum wire from Aliexpress

Soldering metals with aluminum wire from Aliexpress

By applying wire along the entire length of the joints, we ensure that all seams and recesses are filled.
Soldering metals with aluminum wire from Aliexpress

After forming a continuous seam, let the product cool on its own; there is no need for special cooling!
Soldering metals with aluminum wire from Aliexpress

After cooling, a sealed connection was obtained that would definitely not fall apart. Almost like real welding.
Soldering metals with aluminum wire from Aliexpress

You can solder together products not only from one metal, for example, aluminum, but also from different metals: copper, steel, etc. This way you can join aluminum to brass, brass to brass, and even brass to steel.
Soldering metals with wire from Aliexpress

In principle, you can solder any metals in any combination!
Ferrous metals are soldered no worse.
Soldering various metals with wire from Aliexpress

Soldering various metals with wire from Aliexpress

The amazing strength of the connections allows you to solder even those parts that will then contain liquid or air under high pressure!

Features of work and safety precautions


The soldering process occurs at high temperatures and therefore care must be taken when working.
The nuances of soldering with aluminum:
  • Be careful when working so as not to get burned, since the temperature is significant, unlike conventional tin soldering.
  • Aluminum in the straightened state is a very fluid metal, so you need to apply the wire in very small portions.
  • Parts must be stationary when soldering.
  • The soldered product must not be touched until it has completely cooled under natural conditions.

Such soldering wire with flux A must have for every person who loves to make and repair things!

Watch the video


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Comments (8)
  1. Guest Valery
    #1 Guest Valery Guests 17 February 2019 19:39
    7
    Can stainless steel be soldered?
  2. Sergey K
    #2 Sergey K Visitors 17 February 2019 21:51
    1
    What about the strength of the connection? Does it work the same as with regular tin-lead solder or is it better?
    1. Well
      #3 Well Guests 17 February 2019 22:37
      5
      If the strength is the same as with tin solder, then why order such wire? Your question is not logical.
      Tin or lead are soft metals themselves, hence the poor strength. There is also a certain aluminum alloy, which is tens of times stronger. This is an intermediate link between soldering and welding.
      Very durable! Do not doubt! I personally soldered a bicycle frame in a similar way two years ago - it still rides successfully.
      I soldered the broken eye of the engine mount - the duralumin body and everything works just as well!
      1. Sergey K
        #4 Sergey K Visitors February 18, 2019 01:18
        3
        You may not be aware, but there is also a special solder for aluminum. Soldered with a blowtorch. High-voltage cables are soldered with this solder. But it is tin based. And durable in its niche.
        There are also a bunch of different solders, for example you can solder with brass, but such a torch will not be enough, in any case, it took me more than half a bottle of gas to solder the solder onto the cutter! There are better silver-based solders, but one stick the size of an electrode costs more than 4 bucks and I haven't tried it yet...
        So the question arose: why is this solder closer in strength? But I didn’t find the answer either here or in the product reviews on Ali. What I soldered, I easily solder with ordinary tin solders (just don’t take those for radio components!) POS-30 with soldering acid, for example. And everything has lasted for 40 years and I think it will last just as long.
        But Chinese solder for soldering copper pipes, bought on occasion, cannot be soldered with a soldering iron at all, with a torch somehow, and used as a load for plants in an aquarium, after half a year it simply dissolves in water!
  3. Yura
    #5 Yura Guests February 18, 2019 05:23
    2
    solders all metals 100 times stronger than tin
  4. Guest Vladimir
    #6 Guest Vladimir Guests February 20, 2019 11:28
    1
    Have you ever injured your hands on the sharpened handle of a vice?
  5. Igor
    #7 Igor Guests August 13, 2019 07:36
    2
    Copper has been soldered like this for heating for a long time. True, there are fittings made for this. They do not solder end-to-end, but overlapping. Inserting somewhere 8mm into another product. It is also heated with a gas burner and then soldered with zinc wire. However, before warming up, it is treated with a special lubricant so that the zinc spreads well at the attachment point. Calmly holds 6 atmospheres, and not even more. True, large sizes are already welded; gas alone will not help.
  6. Siegfried
    #8 Siegfried Guests 28 May 2020 22:09
    3
    Order on Aliexpress to receive your order in a year? By then, the parts will grow together by natural diffusion. laughing