Hobbyweld 5 (Argon / CO2 MIG mix)


A low cost MIG welding gas for sheet steel welding. No bottle rental.

SKU: HW5 Categories: ,



A solution for hobby or occasional users for whom bottle rental charges from other gas bottle suppliers are uneconomical.  A refundable deposit is payable on initial rental, and thereafter only the cost of the gas is payable on exchange for a full bottle.  For obvious reasons, these bottles are for collection only.

These 9L bottles are equivalent to 21 x 600ml disposable cylinders or 13 x 1L disposable cylinders, and use the same regulator fittings as BOC, Air Products and Air Liquide.

The average welding time for a CO2/Argon mix cylinder is 5 hours continuous welding



  • Good penetration and fusion profiles
  • Excellent arc stability
  • Low distortion
  • Low oxidation potential
  • Low levels of nitrogen and moisture



  • Easy to use, providing a sound weld at minimum cost
  • Low oxidation potential
  • Can also be used for MIG welding stainless steel in less critical applications
  • High strength welds
  • Minimal splatter producing good appearance and finish
  • Minimises post-weld treatment and rework
  • Low porosity and other defects


Applications and uses

  • Specially formulated for MIG welding sheet and mild steel less than 4mm thick
  • A suitable gas for use in vehicle repair as it provides dip transfer in all positions with solid wire
  • The oxidising potential of this mixture has a tendency to produce welds with a black surface film, so generally not recommended for stainless steel applications.


Sizes available:

  • Original
    • 860 x 140 mm bottle.
    • 17 kg.
    • 9 litre water capacity.
    • 137 bar pressure


  • Plus
    • 950 x 200 mm bottle
    • 32 kg
    • 20 litre water capacity
    • 230 bar pressure


  • Ultra
    • 1050 x 200 mm
    • 37 kg
    • 20 litre water capacity
    • 300 bar pressure

*Cylinder weights and dimensions may vary slightly – contents remain balanced*

See Hobbyweld Rent-Free Welding Gas for more information



Additional information


Hobbyweld 5 Original, Hobbyweld 5 Plus, Hobbyweld 5 Ultra


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