ER70S-7
Alloy Type: A5.18, CARBON STEEL Filler Metals for Gas Shielded Arc Welding
ER70S7 is a general purpose MIG wire suitable for many carbon steel welding applications but with substantially greater manganese content than ER70S-3 welding alloy, the higher manganese provides slightly better wetting and weld appearance with slightly higher tensile and yield strengths as well. These combined properties permit increased speed when compared to S-3 product. Under equivalent welding conditions, ER70S-7 produces as weld hardness lower than ER70S-6 but higher than ER70S-3.
Typical Applications: high tensile strength steels for automobiles; rolling stock; electrical appliances; machinery; air conditioners, light gauge steels, pipes, steel frames
| AWS Class: ER70S7 | Certification: AWS A5.18/A5.18M:2005 |
| Alloy: ER70S7 | ASME SFA A5.18 |
| Welding Position: F, V, OH, H | Current:
MIG-DCEP TIG-DCEN |
| Tensile Strength, kpsi: | 82 100%Co2 |
| Yield Strength, kpsi: | 68 100%Co2 |
| Elongation in 2”%: | 27 100%Co2 |
Typical Wire Chemistry as per AWS A5.18 (single values are maximum)
| C | Mn | Si | P | S | Ni | Cr | Mo | V | Cu | ||||
| 0.07-0.15 | 1.50-2.00 | 0.50-0.80 | 0.025 | 0.035 | 0.15 | 0.15 | 0.15 | 0.03 | 0.50 | ||||
| Typical Welding Parameters | |||||||||||||
| Diameter | Process | Volt | Amps | Shielding Gas | |||||||||
| in | (mm) | ||||||||||||
| .035 | (0.9) | GMAW | 28-32 | 165-200 | Spray Transfer 98% Argon+2% Oxygen or 75% Argon+25% CO2 | ||||||||
| .045 | (1.2) | GMAW | 30-34 | 180-220 | Spray Transfer 98% Argon+2% Oxygen or 75% Argon+25% CO2 | ||||||||
| 1/16 | (1.6) | GMAW | 30-34 | 230-260 | Spray Transfer 98% Argon+2% Oxygen or 75% Argon+25% CO2 | ||||||||
| .035 | (0.9) | GMAW | 22-25 | 100-140 | Short Circuiting Transfer 100% CO2 or 75% Argon +25% CO2 | ||||||||
| .045 | (1.2) | GMAW | 23-26 | 120-150 | Short Circuiting Transfer 100% CO2 or 75% Argon +25% CO2 | ||||||||
| 1/16 | (1.6) | GMAW | 23-26 | 160-200 | Short Circuiting Transfer 100% CO2 or 75% Argon +25% CO2 | ||||||||
| 1/16 | (1.6) | GTAW | 12-15 | 100-125 | 100% Argon | ||||||||
| 3/32 | (2.4) | GTAW | 15-20 | 125-175 | 100% Argon | ||||||||
| 1/8 | (3.2) | GTAW | 15-20 | 175-250 | 100% Argon | ||||||||