Welding Wire ER70S-3, ER50-3
welding wire ER70S-3

 


ER70S-3 (ER50-3) is gas shielded welding wire for mild steel. Protection gas could be CO2 or argon-rich mixture. It is suitable for single-pass and multi-pass welding. Welding performance is featured with small spatter, smooth weld pass, high resistance to cracking, especially suitable for high speed welding of thin plate under low heat input.

Application:
 

Suitable for mild steel (Q195, Q215) and low alloy steel (12Mn) in bridge building, vehicles, pipes industry.

 

Chemical Composition: (%)
 

Standard   C Mn Si P S Ni Cr Cu Mo V
GB AWS Sample Value 0.09 1.05 0.65 0.014 0.013 0.02 0.017 0.17 0.004 0.003
ER50-3 ER70S-3 Range 0.06~0.15 0.90~1.40 0.45~0.75 ≤0.025 ≤0.025 ≤0.15 ≤0.15 ≤0.50 ≤0.15

≤0.03


Mechanical Properties:
 

  Tensile Strength
Rm (σb) MPa
Yield Strength
ReH (δs) MPa
Elongation
A (δ5) %
Charpy V impact Test
-20℃ AKV(J)
Shielding Gas
Sample Value 520 437 29 116 CO2 (Purity≥99.5%)
553 441 28 136 Argon-rich mixture
Range ≥500 420 22 ≥27  


Welding Parameter:
 

Wire Diameter
(mm)

Feeding Speed
(mm/s)

Voltage
(V)

Current
(A)

Polarity

Distance between electrode tip and workpiece (mm)

Welding Speed
(mm/s)

1.2

190±10

27~32

260~290

DCRP

19±3

5.5±1.0

1.6

100±5

25~30

330~360

DCRP

22±3

5.5±1.0


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