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APAC ALU 25 Welding Gas

An argon/helium blend providing a moderate heat increase over pure argon for aluminium welding. The 25% helium improves wetting and penetration on thinner aluminium.

Gas MixtureHe 25% / Ar 75%
ProcessMIG & TIG — aluminium
UN NumberUN1956
ConnectionAS 2473 Type 10
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ALUMINIUM
APAC ALU 25
He 25% / Ar 75%

About APAC ALU 25

APAC ALU 25 is a 75% argon / 25% helium blend that lifts arc energy and weld-pool wetting over pure argon for aluminium welding. The 25% helium adds a moderate heat increase that improves fusion and bead profile on thinner aluminium sections while keeping the arc easy to control. It suits MIG and TIG work on aluminium sheet, transport and trailer manufacturing and light architectural fabrication.

APAC ALU 25 is supplied in E-size and G-size cylinders, charged to 19,000 kPa with an AS 2473 Type 10 outlet, and delivered across Melbourne. Compare the full welding range →

⚠ Main Hazards

  • Simple asphyxiant — this argon/helium mixture displaces breathable oxygen with no warning. The argon fraction is heavier than air and pools in low spaces; the helium fraction is lighter and can accumulate at height in enclosed areas.
  • No warning properties — colourless, odourless and tasteless. The gas cannot be detected by human senses at dangerous concentrations.
  • High-pressure stored energy — cylinders are charged to 19,000 kPa. Secure cylinders upright, fit the valve cap for transport and inspect the valve before use.
  • Rapid release of gas can cause cold burns to skin or eyes on contact with escaping gas, valves or regulators.

🏭 Common Applications

🛥️Thin aluminium MIG/TIG welding
🛥️Aluminium sheet fabrication
🚛Transport / trailer manufacturing
📐Window / door frames

Full Specifications

Gas MixtureHe 25% / Ar 75%
Welding ProcessMIG & TIG — aluminium
Cylinder Pressure19,000 kPa
Outlet ConnectionAS 2473 Type 10
UN NumberUN1956
Dangerous Goods Class2.2 (non-flammable, non-toxic gas)
Available SizesE-size, G-size

Available Cylinder Sizes

APAC ALU 25 is supplied in E-size and G-size cylinders. All cylinders comply with Australian Standards; dimensions are approximate.

Most popular

E-size

4.1 m³

Water capacity: 23 L
Pressure: 19,000 kPa
Height: 880 mm
Diameter: 204 mm
Weight: 40 kg

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Large / high-volume

G-size

9.3 m³

Water capacity: 50 L
Pressure: 19,000 kPa
Height: 1,510 mm
Diameter: 230 mm
Weight: 60 kg

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Storage

  • Store in a well-ventilated area
  • Keep away from heat and ignition sources
  • Store below 45°C
  • Secure cylinders upright
  • Label per Dangerous Goods Code

Handling

  • Use appropriate valve protection
  • Check for leaks before use
  • Use compatible regulators only
  • Never use oil or grease on fittings
  • Wear appropriate PPE

Emergency

  • Ventilate the area immediately
  • Stop the leak if safe to do so
  • Evacuate low or confined spaces
  • Check valve and fittings
  • Contact emergency services (000)

Safety Data Sheet (SDS) — APAC ALU 25

Complete hazard identification, first-aid measures, firefighting and transport information for this shielding gas mixture.

Request SDS

Safety data sheets for welding mixtures are available on request and are being added to the site.

Other Aluminium Welding Gases

APAC ALU 50 He 50% / Ar 50% APAC ALU 75 He 75% / Ar 25%

Need APAC ALU 25 for your workshop?

Get trade pricing on E-size and G-size cylinders, delivered across Melbourne. Call 1300 123 082 or request a quote online.

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