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Standard MIG / MAG Welding Gases

Air Products offers a full range of standard shielding gas mixtures for the MIG / MAG welding of all common material types.

Our standard gases are available in traditional cylinder sizes at 200 bar and 230 bar cylinder pressure. Further information on cylinder contents, pressures and valve outlet connections can be found on the Welding and Cutting Gases Cylinder Identification sheet.

Standard gases are named in accordance with their chemical composition
     
Coogar™ argon, carbon dioxide, oxygen [Ar, C02, 02 ]
Weldap™ argon, carbon dioxide [Ar, C02]
Prodarc™ argon, oxygen [Ar, 02]
Astec™Sx argon, helium, carbon dioxide [Ar, He, C02]
Astec™xx argon, helium [Ar, He]
     
[Note – where x = a number between 0 and 9]
Gas Selection
   
 
Material

Solid & Metal cored wires
Up to 6mm thick above 6mm thick

Flux cored wires
All thickness

Carbon and low alloy steels
Coogar SG
Coogar SG
Weldap 20
Coogar 5
Coogar 20
Coogar SG
Weldap 8
Prodarc 5
 
Prodarc 2
Prodarc 2
 
Prodarc 5
Prodarc 5
 
Stainless steels
Astec S5*
Astec S3
Weldap 20
Astec S3
Weldap 2
Coogar SG
Weldap 2
Prodarc 2
 
Prodarc 2
Prodarc 2
 
Aluminium and alloys
Astec 30
Astec 75
Not applicable
argon
Astec 50

* Can be used on all thickness' but for dip transfer only
 

MIG / MAG Welding

MIG (metal inert gas) and MAG (metal active gas) welding are widely used wherever medium and high fusion rates are required.

Both techniques use a DC arc burning freely between the workpiece and a wire electrode, which functions simultaneously as a power carrier and a source of filler metal.

A protective gas envelope shields the arc, the drop transfer process and the melt from the atmosphere.

For MIG welding, the gas is inert: argon or an argon-helium mix. MAG welding uses a mixture of argon with an active gas such as oxygen, CO2 or both.
     
     
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