Welding, Cutting & Safety Solutions

Weld Star – SG3 (G4Si1) Wire (1.2mm) 15kg (Plastic)


£37.81 ex VAT £45.37 inc VAT

Brand: Weld Star
Product Model:
In Stock


Features and Applications

A copper coated solid wire suitable for single pass or multipass welding of unalloyed and low-alloyed carbon-manganese steels.

The higher Si-Mn content increases the weld metal strength and leaves a good bead appearance.

Designed for semi-automatic and full-automatic GMAW applications.

Good mechanical properties at sub-zero temperatures down to -40?C.

Vacuum-sealed aluminium foil packaging to prevent moisture absorption.

Precision layer wound for superior wire feeding characteristics.

Typically used on boilers, industrial machinery, bridges, shipbuilding, automotive, rail, structural and engineering fabrications etc.

Green wire is produced using virgin raw materials sourced from specialised steel mills, which ensures consistent reliability and quality.


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


EN ISO 14341-A – G 42 3 C1 / G 46 4 M21 4Si1
AWS A5.18 – ER 70S-6


Chemical Composition % (Typical)


Mechanical Properties (Typical)
Shielding GasC1M21
Tensile Strength570 MPa590 MPa
Yield Strength460 MPa490 MPa
Impact Strength58 J88 J
Test Temperature-30?C-40?C

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


Welding Parameters
mmCurrent (A)Voltage (V)
0.80 mm60-18018-22
1.00 mm80-23020-28?
1.20 mm120-35026-34


Shielding Gases

EN ISO 14175 – C1, M21


Welding Positions

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


Packaging Data
Weight Spool Pallet Qty
0.80 mm

1.00 mm

1.20 mm

15 Kg

15 Kg

15 Kg







Liability: Whilst all reasonable efforts have been made to ensure the accuracy of the information contained, this information is subject to change without notice and can be only considered as suitable for general guidance.

A carriage charge is applied to orders, for standard 1-2 day shipments to mainland destinations within the United Kingdom. Other destinations and premium services are available but subject to additional freight charges.


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