ER70S-3
Class: ER70S-3
AWS: A5.18
Conforms to Certification: AWS A5.18 | ASME SFA A5.18
Weld Process Used for Mig: (GMAW)
| AWS Chemical Composition Requirements | |
| C = 0.06 – 0.15 | Ni = 0.15 max |
| Mn = 0.90 – 1.40 | Cr = 0.15 max |
| Si = 0.45 – 0.75 | Mo = 0.15 max |
| P = 0.025 max | V = 0.03 max |
| S = 0.035 max | Cu = 0.50 max |
Available Sizes
.023 X 11#, 33#
.035 X 11#, 33#
.045 X 11#, 33# & 60# Coils
Application
Type ER70S-3 is a welding wire for tig and mig welding applications.
For Mig welding use Carbon Dioxide or Argon + Co2 or Argon + 2% Oxygen as shielding gases.
| Deposited Chemical Composition % (Typical) | ||
| C = 0.07 | P = 0.012 | Si = 0.52 |
| Mn = 1.19 | S = 0.022 | Cu = 0.40 |
| Deposited All Weld Metal Properties % (As Welded) | |
| Tensile Strength | 75,500 psi |
| Yield Strength | 61,500 psi |
| Elongation | 23% |
Deposited Charpy-V-Notch Impact Properties %
35 ft. lbs. (at 0ºF)
| Recommended Welding Parameters (GMAW “Mig Process”) | ||||
| Wire Diameter | Volts | Amps | IPM | |
| Short Arc Welding | .030 | 16 – 18 | 75 – 125 | 176 – 324 |
| .035 | 15 – 18 | 100 – 160 | 132 – 228 | |
| .045 | 17 – 18 | 100 – 220 | 149 – 208 | |
| Spray Arc Welding | .030 | 26 – 28 | 200 | 560 |
| .035 | 27 – 29 | 250 | 504 | |
| .045 | 28 – 31 | 265 | 336 | |
| .052 | 29 – 31 | 300 – 340 | 280 – 350 | |
| 1/16 | 30 – 36 | 350 – 400 | 220 – 280 | |