| MIG Welding |
Solid Wires for GMAW of Carbon Steel per AWS A5.18 |
| Classification |
Composition |
Characteristics |
Applications |
| C |
Mn |
Si |
Ti |
Zr |
Al |
| ER70S-2 |
00.7 |
0.90-
1.40 |
0.40-
0.70 |
0.05-
0.15 |
0.02-
0.12 |
0.15-
0.15 |
Contains Ti, Zr, Al deoxidants in killed, semi-killed, and rimmed steels. Use on rusted, dirty steel; Ar-O2, CO2, Ar-CO2 shielding. For out-of-position short-circuit transfer. |
Structural steelwork, pipe offshore platforms. Automobile frames. |
| ER70S-3 |
0.06-
0.15 |
0.90-
1.40 |
0.45-
0.70 |
--- |
--- |
--- |
For single-pass welds, multipass on killed or semikilled steel. CO2, Ar-O2 shielding. Small diameters for out-of-position welding, short-circuit transfer with CO2, Ar-CO2 shielding. High heat input with CO2, degrades mechanical properties. Weld puddle more fluid than with ER70S-2, for better wetting, flatter bead. |
General-purpose fabrication, heavy equipment, metal furniture, automotive frames, pipe and vessel root passes, hvac ductwork. |
| ER70S-6 |
0.07- |
1.40- |
0.80- |
--- |
--- |
--- |
Highest Mn-Si content, for high-current welding with CO2 of killed, semikilled, rimmed steels, moderate surface scale. Welds out-of-position, short-circuit transfer. Smooth welds on sheet metal. Good for poor fitups. Short-arc with CO2 or Ar-CO2. |
Structural steel work, tanks, heavy equipment. |