Weld Star – SG3 (G4Si1) Wire (1.0mm) 15kg (Plastic)

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SKU: 3010301510 Category:
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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 -40ºC.

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)
C% Si% Mn% P% S% Cu%
0.08 0.95 1.70 <0.020 <0.020 <.025
Cr% Ni% Mo% Al% V% Zr+Ti%
<0.15 <0.15 <0.050 <0.020 <0.030 <0.15


Mechanical Properties (Typical)
Shielding Gas C1 M21
Tensile Strength 570 MPa 590 MPa
Yield Strength 460 MPa 490 MPa
Elongation 30% 28%
Impact Strength 58 J 88 J
Test Temperature -30ºC -40ºC

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

Welding Parameters
Ømm Current (A) Voltage (V)
0.80 mm 60-180 18-22
1.00 mm 80-230 20-28
1.20 mm 120-350 26-34


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.


Weld Star

Weld Star is a leading brand of welding products, known for their high-quality wires, electrodes, and Infinium welding machines.
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