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Argon Oxygen Mixtures
Mixture Grade
AOM1
Ar %
99
CO2 %
1
Application
This blend is primarily used for spray transfer on stainless steels. One percent oxygen is usually sufficient to stabilize the arc and improve the droplet rate and bead appearance.
AOM2
Mixture Grade
98
Ar %
2
CO2 %
Application
​This blend is used for spray arc welding of carbon steels, low-alloy steels and stainless steels. It provides greater wetting action than the 1% oxygen mixture. Weld mechanical properties and corrosion resistance of welds made with 1% and 2% oxygen additions are similar. However, bead appearance will be darker and more oxidized for the 2% blends with stainless steels.
Mixture Grade
AOM5
Ar %
95
CO2 %
5
Application
This blend provides a more fluid but controllable weld pool. It is the most commonly used argon-oxygen mixture for general carbon steel welding. The additional oxygen also permits higher travel speeds.
Argon Helium Mixtures:
AHM50
Mixture Grade
50
Ar %
50
CO2 %
Application
TIG welding ; this balanced mix not only allows hotter arc welds but also produces a more consistent arc start.
Mixture Grade
AHM75
Ar %
25
CO2 %
75
Application
When welding thicker metals or in specific environments, a mixture of argon and helium is used to improve the welding process’s overall performance.
Balance the heat intensity of helium with stability & control by Argon.
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