Argon Carbon Dioxide Welding Mixtures
Argon Carbon Dioxide blends are versatile mixtures for welding carbon, low-alloy and some stainless steels. Increasing the CO2 content will increase weld penetration and bead wetting characteristics. At higher current levels and CO2 content, increased spatter may result. Argon Carbon Dioxide blends can be used to join a wide range of material thickness while utilizing a variety of modes of metal transfer.
Principal Applications
Argon Carbon Dioxide blends are used for all kinds of structural steel, farm implements and machinery. Lower levels of CO2 can be used for pulsed arc or spray arc welding, while higher levels > 20% are used for short arc welding and the shielding of some flux-cored wires.
The Key To Increased Welding Productivity And Profits
Looking for the key to consistent welds under the most challenging situations? Look to Linde® StarGold™ argon-based shielding gases. Our argon-based family of blends is available for top-quality welding in a variety of precision formulations. Linde StarGold blends are also designed to meet your specific Gas Metal Arc Welding (GMAW or MIG/MAG) application requirements. See Brochure.
| Mixture | AR % | CO2 % | Cylinder Style | Volume (ft3) | Pressure (psig) | Part Number | More Information |
|---|---|---|---|---|---|---|---|
| StarGold™ C-5 | 95 | 5 | T K | 338 252 | 2,640 2,200 | AR STAR7-T AR STAR7-K | StarGold™ C-5 for All Forms of GMAW of Stainless Steel |
| StarGold™ C-10 | 90 | 10 | T K | 348 258 | 2,640 2,200 | AR STAR9-T AR STAR9-K | StarGold™ C-10 and C-20 for Conventional Spray GMAW C-5 and C-10 for Conventional and Pulsed Spray GMAW |
| StarGold™ C-15 | 85 | 15 | T K | 357 264 | 2,640 2,200 | AR STAR10-T AR STAR10-K | |
| StarGold™ C-20 | 80 | 20 | T K | 368 272 | 2,640 2,200 | AR STAR13-T AR STAR13-K | StarGold™ C-10 and C-20 for Conventional Spray GMAW C-20 and C-25 for Short Circuiting GMAW and FCAW |
| StarGold™ C-25 | 75 | 25 | T K | 381 280 | 2,640 2,200 | AR STAR14-T AR STAR14-K | C-20 and C-25 for Short Circuiting GMAW and FCAW |
StarGold C-5 Gas Blend
This blend is used for pulsed spray transfer and short-circuiting transfer on a variety of material thicknesses. A 5% mixture may be used for GMAW-P of low alloy steels for out-of-position welding. The arc forces that develop give this mixture more tolerance to mill scale and a more controllable puddle than an argon-oxygen blend.
StarGold C-10 Gas Blend
This blend performs similarly to the StarGold C-5, but with increased heat input providing a wider, more fluid weld puddle in either short-circuit or spray transfer.
StarGold C-15 Gas Blend
This blend has been used for a variety of applications on carbon and low-alloy steels. In the short-circuit mode of transfer, maximum productivity on thin gauge metals can be achieved with this blend. This is done by minimizing the excessive melt-through tendency of higher carbon dioxide mixes, while increasing deposition rates and travel speeds. As the carbon dioxide percentages are lowered from the 20% range (maximum spray arc levels), improvements in deposition efficiency occur due to decreasing spatter loss. This blend will support the spray arc mode of transfer.
StarGold C-25 Gas Blend
This blend is commonly used for GMAW with short-circuiting transfer on low carbon steel. It was formulated to provide optimum droplet frequency on short-circuiting transfer using .035 and .045 diameter wire. Linde's StarGold C-25 operates well in high current applications on heavy base metal. It promotes good arc stability, weld pool control, and weld bead appearance. This blend will not support the spray type mode of metal transfer.
StarGold C-20 Gas Blend
May be used for short circuiting or spray transfer welding of carbon steel.
StarGold C-40 Gas Blend
This mixture is recommended for some flux-cored wires where improved arc stability and reduced spatter levels and offers improved welding penetration when compared to the StarGold C-25mixture are desirable.
StarGold C-50 Gas Blend
Is often used for short arc welding of pipe, particularly when other contaminants are present in the surfaces to be welded.
Mig Mix Gold Gas Blend
This blend performs similarly to the StarGold C-5, but with increased heat input providing a wider, more fluid weld puddle in either short-circuit or spray transfer.