Perfect Welding

The current page does not exist in the target language.

Do you want to change the language and go to the home page or do you want to stay on the current page?

Change Language
Perfect Welding
Aluminium

Aluminum Welding Stable connections, lightweight

Challenge of aluminum welding

Alongside steel, aluminum is the most widely used construction material. Its biggest advantage is that it is just as strong but only around half as heavy. The use of aluminum is therefore preferred for lightweight constructions.

Interesting facts about aluminum

Welding of aluminium

Pure aluminum (Al99.5) is not very strong. However, it is used as the basis for alloys with a strength that matches up to steel.

Welding aluminum is particularly difficult because the material is surrounded by an oxide layer. This only melts at around 2015 degrees Celsius, while aluminum itself melts at around 650 degrees depending on the alloy. If the oxide layer were to be melted in the conventional manner then the aluminum would run away, and welding would be impossible. It is therefore necessary to destroy or displace the oxide.

Magnesium, manganese, copper, silicon and aluminium

What alloys of aluminum are there?

The properties of pure aluminum can be changed using alloys. For example, adding magnesium considerably increases the strength of the material.

The most important components of aluminum alloys and their properties are:

  • Magnesium (Mg)
    0.3–7% higher strength, finer grain size
  • Manganese (Mn)
    0.3–1.2% better corrosion resistance, higher strength
  • Copper (Cu)
    roughly 5% higher strength, lower corrosion resistance, important for hardening capacity
  • Silicon (Si)
    12% for casting, reduces the melting point to 577°C, however with coarse grains
Thumps up

Advantages

  • Very light but strong
  • Corrosion resistant
  • Temperature resistant
  • Not sensitive to UV radiation
Thumps down

Disadvantages

  • Expensive parent material
  • Difficult to weld
Aluminium welding

Applications of aluminum

Automotive industry Vehicle manufacturing
Buildings Construction
Ship construction Shipbuilding
Plane construction Aviation

Professional power sources for aluminum welding



Send your non-binding request directly to Fronius

Let’s get connected.

    Thank you for your message. We will process your request as soon as possible.

    We think you are located in a different country

    The country currently selected is Fronius International. Would you like to stay on this page or do you want to switch to the local website?