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Argon-Helium Mixtures for Coated
Steel Welding

 

 

The Praxair HeliStar® argon/helium blends are used in a wide variety of Gas Tungsten Arc Welding (GTAW or TIG) applications where increased heat input to the base material is desirable while maintaining favorable arc starting and stability characteristics. The Praxair HeliStar A-75, A-50, and A-25 blends can also be used for Gas Metal Arc Welding (GMAW or MIG) of thick aluminum sections and for other non-ferrous materials where additional heat input to the base material enhances welding performance.

Principal Applications
Praxair HeliStar blends are used for TIG welding of light gauge steel, stainless steel, and aluminum applications such as bicycle frames, food service equipment and recreational boats. The heavier aluminum and copper section materials found in tanks and electrical equipment are joined using the MIG process and HeliStar gas mixtures.



The Key To Increased Welding Productivity And Profits

When you want to ensure precision high-quality welds in the most pressing environments, you want Praxair® HeliStar™ helium-enhanced shielding gases. These helium-enhanced blends are available in a variety of precise formulations. That means there’s a Praxair HeliStar gas blend to meet your specific Gas Metal Arc Welding (GMAW or MIG/MAG), Gas Tungsten Arc Welding (GTAW), Plasma Arc Welding (PAW) and Laser welding applications. See Brochure.

 

Mixture Composition % Cylinder Style Volume (ft3) Pressure (psig) Part Number More Information
Ar
He
HeliStar® A-25 25 75 T
K

280
212

2,640
2,200
HE STAR25-T
HE STAR25-K

MIG and TIG Blends for Welding Aluminum Datasheet

MIG and TIG Blends for Welding Carbon Steel, Stainless Steel, Aluminum and Other Non-Ferrous Materials Datasheet

HeliStar® A-50 50 50 T
K
288
217
2,640
2,200
HE STAR24-T
HE STAR24-K

MIG and TIG Blends for Welding Aluminum Datasheet

MIG and TIG Blends for Welding Carbon Steel, Stainless Steel, Aluminum and Other Non-Ferrous Materials Datasheet

HeliStar® A-75 75 25 T
K
304
228
2,640
2,200
HE STAR21-T
HE STAR21-K

MIG and TIG Blends for Welding Aluminum Datasheet

MIG and TIG Blends for Welding Carbon Steel, Stainless Steel, Aluminum and Other Non-Ferrous Materials Datasheet

 

HeliStar A-25 Gas Blend

This blend is used for welding non-ferrous base metals when an increase in heat input is needed and weld bead appearance is of primary importance.


HeliStar A-50 Gas Blend

This blend is used primarily for high-speed mechanized welding of non-ferrous materials under 3/4 inch thick.


HeliStar A-75 Gas Blend

This blend is used for mechanized welding of aluminum greater than one inch thick in the flat position. It increases heat input and reduces porosity of welds in copper.