Welding Wire ER70S-3

WELDING & MATERIALS

Welding Wire ER70S-3

WELDING & MATERIALS

Welding Wire ER70S-3

The ER70S-3 is 500MPa grade carbon steel welding wire. When paired with CO2 gas shielding, it demonstrates an excellent fluidity and crack resistance during welding process. It produces minimal spatter and forms a thin, easily removable slag. This wire is suitable for smooth and refined weld bead formation, especially the low-capacitance and high-speed welding.

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Classification：

GB/T 8110 ER50-3

AWS A5.18 ER70S-3

ISO 14341-B-GS3

Size: 1.2mm, 1.6mm, 2.0mm, 2.4mm, 3.2mm, 4.0mm

Application: Used for the welding of steel structure with the corresponding strength grade, as well as for the welding of low-carbon sheet workpieces with a complete surface treatment e.g. bridges, vehicle construction pipelines, vehicle manufacturing etc.

Chemical Composition Of Welding Wires:(Mass Fraction) %

Item	C	Mn	Si	S	P	Ni	Cr	Mo	V	Cu
Guarantee Value	0.06-0.15	0.90-1.40	0.45-0.75	≤0.025	≤0.025	≤0.15	≤0.15	≤0.15	≤0.003	≤0.50
Typical Value	0.08	1.25	0.59	0.012	0.013	0.03	0.02	0.002	0.003	0.12

Mechanical Properties Of Deposited Metal

Item	Tensile strength Rm/MPa	Yield strength ReL/Rp0.2 MPa	Elongatio A%	Impact value KV2(J) (-20℃)	Shielding Gas
Guarantee Value	490-670	≥390	≥18	≥27	CO₂
Typical Value	542	445	25	80	CO₂

Recommended Welding Parameter:(DC+)

Wire Size(mm)	Welding Current(A)
0.8	50-180
1.0	70-230
1.2	80-350
1.6	120-500

Notes:

1. Impurities such as rust, oil, and moisture must be removed from the weldment before welding.

2. The energy of the welding line will directly affect the mechanical properties of the weld. The magnitude of the line energy depends on the level of importance of the structure. The more important the structure, the smaller the line energy should be used.

3. The welding parameters provided are for reference only. The user should formulate the welding specification for suitable production according to the specific situation.

Welding Wire ER70S-3

Welding Wire ER70S-3

Welding Wire ER70S-3

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