AWS A5.18 ER70S-2
Solid Electrodes and Rods, Welding Wire — ER70S-2
ER70S-2
ER70S-2 [ER48S-2] is primarily used for single-pass welding of killed, semi-killed, and rimmed steels, but may be used for some multipass applications. Because of the added deoxidants, these filler metals can be used for welding steels that have a rusty or dirty surface, with a possible sacrifice of weld quality depending on the condition of the surface. ER70S-2 [ER48S-2] filler metals are used extensively to produce high quality, high toughness welds with the GTAW process. These filler metals are also well suited for use in single side, melt through welding without a protective root shielding gas on the backside of the joint. Typical specifications for these steels are ASTM A 36, A285-C, A 515-55, and A 516-70, which have UNS numbers K02600, K02801, K02001, and K02700, respectively.
| 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 @ |
| 0.07 max | 0.90-1.40 | 0.40-0.70 | 0.025 max | 0.035 max | 0.15 max | 0.15 max | 0.15 max | 0.03 max | 0.50 max | 0.05-0.15 | 0.02-0.12 | 0.05-0.15 | 70,000 | 480 | 58,000 | 400 | 22 | -20°F |