AWS A5.18 ER70S-4
Solid Electrodes and Rods, Welding Wire — ER70S-4
ER70S-4
ER70S-4 [ER48S-4] are intended for welding steel where conditions require more deoxidation then is provided by the ER70S-3 [ER48S-3] filler metal. Typical base metal specifications are often the same as those for the ER70S-2 [ER48S-2] classification. This classification does not require impact setting.
| Nominal Chemical Composition (%) | Tensile Strength | Yield Strength | Elongation | Average Impact Strength | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | Si | P | S | Ni | Cr | Mo | V | Cu | Ti | Zr | Al | psi (min) | MPa (min) | psi (min) | MPa (min) | % (min) | 20 ft•lbf @ |
| 0.06-0.15 | 1.00-1.50 | 0.65-0.85 | 0.025 max | 0.035 max | 0.15 max | 0.15 max | 0.15 max | 0.03 max | 0.50 max | – | – | – | 70,000 | 480 | 58,000 | 400 | 22 | Not Required |