AWS A5.18 ER70S-2 MIG Welding Wire is a multiple deoxidized mild steel welding wire for GTAW welding applications. In addition to manganese and silicon, it picks aluminum, titanium and zirconium as deoxidizers which provide sound welds in semi-killed and rimmed steels and is suitable for welding steels that have a rusty or dirty surface.

MIG Welding Wire 

Characteristics and Application

Typical chemical Composition of Weld Metal (%)

Welding Positions:

Notes on usage:

1.100% Argen shielding gas with 99.997% high purity is recommended and the flow rate must be properly controlled. The flow rate is recommended 7-12 1/min when arc current is 100-20CAmp and it goes up to 12-151/min when arc current rises to 200-300Amp.

2.Trailer Shieid is required to ensure the weld pool completely shielded by inert gas until solidification is complete and no porosity problem.

3. Select right gas cup size and employ proper stick out of tungsten electrode.

4. In order to have a very clean weld pool, keep the weld plate free from dirt, rust, paint and any other atmospheric contamination.

Typical Mechanical Properties of Weld Metal

C 0.06  Mn 1.25  Si 0.50  P 0.01  S 0.008 Ni 0.03 Cr 0.05  Mo 0.07 V 0.02 Al 0.14 Ti 0.15 Zr 0.08 Cu 0.048

AWS A5.18 ER70S-2

JIS Z3316 W 49 AP 3U

Yield strength 540MPa  Tensile Strength 620MPa  Elongation 30%  Charpy V-Notch -30℃ 300J