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Aluminium

Aluminium Welding

Argon is the most commonly used gas for MIG welding thinner sections of aluminium, this is due to its heat transfer rates and the need to avoid active gas contaminants.  In addition as it's a common shielding gas, it's also readily available.

For thicker section and higher strength welds, our range of Helimix gases combine argon with a maximum 75% helium, which helps minimize the formation of magnesium oxide on aluminium alloys and allows greater penetration.


 

Welding Gas Selector

Gas Weld Speed Spatter Control Porosity Control Fusion Penetration Ease of Use Cost
Argon HP ■ ■ £
Helimix AL30 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ £ £
Helimix AL50 ■ ■ ■ ■ ■ ■ ■ ■ £ £
Helimix AL75 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ £ £ £

Characteristics for MIG welding aluminium, copper & titanium alloys
■ ■ ■ = Best    |    = Worst

Struggling to select a gas? If in doubt, please call 0191 271 0222 for specialist advice!

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