Shielding gas
70% argon / 30% helium inert blend
An inert blend used when additional helium heat transfer is useful for the application.
- Classification
- EN ISO 14175: I3; inert argon/helium shielding blend
- Processes
- TIG (GTAW) · Aluminium MIG (GMAW)
- Materials
- Aluminium · Compatible copper alloys · Other procedure-approved TIG materials
How to choose it
Compare fusion and operating cost with pure argon on the actual joint. The machine settings and flow measurement must suit the selected gas.
Limits and product details
Changing gas changes the arc and shielding behaviour. A helium blend does not correct an unsuitable joint preparation or machine.
Additional details
- Composition example
- 70% argon / 30% helium: Linde VARIGON He30
- Process context
- Linde lists aluminium MIG and TIG use
- Thermal effect
- Linde describes greater energy transfer with helium added to argon
- Safety
- This inert gas blend is not breathable
References
Information checked 2026-10-14.
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- Product information · Process contextOpens the source in a new tabprodukte.linde-gas.atLink checked · 31 Oct
- Composition exampleOpens the source in a new tabprodukte.linde-gas.atLink checked · 31 Oct
- Thermal effectOpens the source in a new tabstatic.prd.echannel.linde.comLink checked · 31 Oct