Argon Helium Mixture for welding — optimised helium ratios for TIG and MIG joints
An Argon Helium Mixture for welding from REAL GAZ lets welders tune arc energy by choosing how much helium accompanies the argon. More helium means a hotter, wider arc; less helium keeps the arc stable and the gas consumption economical.
Typical selections are 25% He for general aluminium, 50% He for thick sections and 75% He for the heaviest copper and automated applications.
Typical selections are 25% He for general aluminium, 50% He for thick sections and 75% He for the heaviest copper and automated applications.
Welding procedures are usually qualified to EN ISO 15614 and gas selection follows EN ISO 14175 group I3, with REAL GAZ cylinders supplied in ISO 9809 steel.
Choosing the helium percentage depends on thickness and conductivity: up to about 6 mm of aluminium is usually well served by pure argon or a 25% helium mixture, while 10 mm and above often benefits from 50% or 75% helium. Gas flow should typically be set between 12 and 25 litres per minute depending on torch size and joint, and a gas lens or larger nozzle helps ensure good shielding. Trial welds on your actual material and test coupons will confirm the best compromise between penetration, bead profile and cost.
🏭 Where Argon-Helium Welding Mixtures Are Used
- 🔥 TIG welding of aluminium — helium raises heat input so thicker sections can be welded in fewer passes;
- ⚡ MIG welding of thick plate — higher arc voltage produces wide, deeply fused beads with lower risk of cold lap;
- 🔌 Copper and copper alloys — preheat requirements can be reduced when a helium-rich shielding gas is used;
- 🤖 Mechanised welding — repeatable arc behaviour supports robotic and orbital cells.
💡 Why Choose REAL GAZ
- ✅ Procedure-friendly ratios — fixed helium fractions fit qualified welding procedure specifications;
- 🧪 Spatter and porosity control — dry, pure gas supports clean bead appearance and good inspection results;
- 🎯 Advice on flow rates — helium is light, so higher flow settings are often needed, and we advise accordingly;
- 🔒 Compatible equipment — we recommend flowmeters and regulators calibrated for argon-helium blends;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- verification of helium fraction;
- moisture and oxygen limits checked;
- cylinder valve cleaning and testing;
- pressure and leak checks before despatch.
Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
Check hoses and fittings for leaks, as helium escapes through even small defects. Keep cylinders upright and secured on the welding cart, avoid arc strikes on the cylinder, and ventilate the welding area so that fumes are removed from the welder's breathing zone.
⚙️ Trusted Gas Solutions
Welders and welding engineers who need an argon helium mixture for welding will find REAL GAZ a practical partner: blends are consistent, documentation is complete and advice on flow rates and torches is part of the service. We supply Azerbaijan, Turkey, Georgia, Uzbekistan and the USA.
REAL GAZ — the right arc for the right weld.