Welding Gas Argon-Helium — hotter arc, deeper penetration, cleaner welds
Welding Gas Argon-Helium from REAL GAZ is an inert shielding mixture that adds helium to argon to raise arc voltage and heat input. The result is deeper penetration and faster travel speeds, especially on thick or highly conductive metals.
Mixtures are commonly offered with 25%, 50% or 75% helium, and fall into group I3 of the inert-gas classification.
Mixtures are commonly offered with 25%, 50% or 75% helium, and fall into group I3 of the inert-gas classification.
REAL GAZ shielding gases are specified according to EN ISO 14175 (group I3, argon-helium), with purity suited to TIG and MIG processes and steel cylinders manufactured to ISO 9809.
The three most common blends are Ar + 25% He for general-purpose aluminium work, Ar + 50% He for thicker sections and higher travel speeds, and Ar + 75% He for the heaviest sections and automated lines. In TIG welding of thick aluminium, helium additions also widen the weld pool and reduce the need for preheating; in MIG welding they improve wetting and reduce the risk of lack-of-fusion defects. Flow rates are normally set higher than for pure argon because helium is much lighter, and a flowmeter calibrated for the specific mixture helps ensure accurate settings.
🏭 Where Argon-Helium Welding Gases Are Used
- 🔩 Aluminium fabrication — the hotter arc overcomes the high thermal conductivity of aluminium alloys in thick plate and pipe welds;
- 🔌 Copper and bronze — helium additions help fusion on copper bus bars, heat exchangers and cable components;
- 🚢 Heavy plate welding — shipyards and pressure-vessel shops use argon-helium to reduce the number of passes on thick sections;
- ⚛️ Automated orbital welding — consistent mixtures help maintain arc stability in mechanised and orbital systems.
💡 Why Choose REAL GAZ
- ✅ Deeper fusion — helium raises heat input, reducing lack-of-fusion defects on thick, conductive materials;
- 🧪 Faster travel — higher welding speeds can improve productivity compared with pure argon;
- 🎯 Tight helium control — fixed blend ratios let welders qualify procedures once and repeat them;
- 🔒 Dry, clean gas — low moisture and oxygen protect weld metal from porosity and oxidation;
- 📄 Certificate of Analysis (CoA) — supplied with every order.
🔬 Quality Control & Safety
- certified-purity argon and helium used;
- fixed-ratio blending with composition checks;
- dew point and oxygen measurement;
- leak testing before despatch.
Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
Cylinders of 20, 40 and 50 litres at 200 bar are available, plus bundles for fixed installations. Store them upright in a ventilated area, secure them against falling and keep hoses and torches free from leaks, since helium escapes quickly through small defects.
⚙️ Trusted Gas Solutions
Welding engineers who need welding gas argon-helium for demanding aluminium, copper or thick-section work can turn to REAL GAZ for consistent mixtures and complete cylinder documentation. We supply fabricators in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA.
REAL GAZ — more heat where your weld needs it.