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Mild Steel MIG Wire A18 SG2 0.8mm – 5kg Spool

£13.60 ex VAT

Further Reductions Available On Request 01276 505012

  • A18 SG2
  • General Purpose Steel
  • 5kg – 0.8mm



A 5kg spool of 0.8mm mild steel MIG wire on a 5KG spool, suitable for welding mild steel.  This is the most popular MIG wire.

0.8mm MIG wire is a very versatile size, very popular for automotive work and general light fabrication.

Spools are 200mm in diameter with an inner hole of approximately 54mm.

Copper coated double-deoxidised for welding unalloyed and low-alloyed mild and medium tensile steels, for impact toughness down to -20C. Manufactured with a high-quality copper finish for improved feeding. Precision layer wound.  Smaller compact MIGs, such as the Jasic MIG welder up to the MIG 200 only take 5kg spools.


Suitable for use in general fabrication, construction, tanks and boilers, repair and auto body applications. Comprises manganese and silicon to provide good mechanical properties.

5KG spools are suitable for smaller compact machines but will also fit larger machines.  When fitting a 5KG spool to a 15KG capacity machine, you may need a spacer to ensure the smaller spool is still restricted by the brake on the hub. Feel free to let us know if you need one and we may be able to help with a piece of pipe we can cut to size for you.

Ideal when not welding lots too, where having a 15KG spool may mean it will rust over the years.


Material to be welded:

Can be used on a wide variety of mild steels, structural steel, fine-grain steel, pipe steel, boiler steel and cast steel.

Current : DC =+

Shielding Gas : CO2, ArCO2


EN ISO 14341-A – G 42 3 C1 / G 42 4 M21 3Si1
AWS A5.18 – ER 70S-6


Chemical Composition % (Typical)
C%   Si%    Mn%   P%       S%        Cu%
0.07  0.85   1.45   <0.025   <0.025   <0.35

Cr%      Ni%       Mo%    Al%        V%          Zr+Ti%
<0.15    <0.15    <0.15    <0.020   <0.030    <0.15


Mechanical Properties (Typical)


Shielding Gas C1 M21
Tensile Strength 540 MPa 580 MPa
Yield Strength 440 MPa 460 MPa
Impact Strength 70 J 90 J

Mechanical properties are approximate and may vary based on the heat, shielding gas, welding parameters and other factors.


Welding Parameters

Diameter Amps Volts
0.6mm 50 – 100A 15 – 20
0.8mm 60 – 180 18 – 22
1.0mm 80 – 230 20 – 28


Shielding Gases

EN ISO 14175 – C1, M21


Welding Positions

EN ISO 6947 – PA, PB, PC, PD, PE, PF, PG


Typical Base Materials

S185, S235, S275, S355 – Grade A, B, D, AH32 to DH36 – L210, L240, L290, L360, L240NB, L290NB, L360NB, L360QB, L240MB, L290MB, L360MB, L415MB – X42, X46, X52, X60 – P235T1, P235T2, P275T1 – P275T2, P355N – P235GH, P265GH, P295GH, P355GH – S275, S355, S420, S275M, S275ML, S355M, S355ML, S420M, S420ML*
* Illustrative, not exhaustive list


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