ATOM ARC 7018-AC
Atom Arc 7018-AC is an all-position low hydrogen electrode specifically designed to have optimum arc characteristics when used with AC power sources. It offers easy arc starting, smooth arc and low spatter.
Features
Atom Arc 7018-AC is a product specifically designed to have optimum arc characteristics when used with AC power sources having an open circuit voltage of 75 to 80V. Compared to standard Atom Arc 7018 operating on AC, this electrode will have easier arc starting and restrike, a smoother arc and lower spatter. It is usable on a wide range of steels.
View large imageClassifications
Classifications/Approvals
- ASME SFA 5.1
Properties
| As Welded | |
|---|---|
| Yield Strength | 77 ksi, 535 MPa |
| Tensile Strength | 86 ksi, 595 MPa |
| Elongation in 2" | 29 % |
| Reduction in Area | 72 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature -20ºF (-29ºC) | |
| As Welded | 46 ft.-lbs., 60 J |
| Typical Undiluted Weld Metal Analysis | |
| C | 0.05 % |
| Mn | 0.9 % |
| Si | 0.3 % |
| P | 0.014 % |
| S | 0.015 % |
SAW
Accessories
Depositions
| Diameter | Optimal Amperage | Range Amperage | Deposition Rate | Efficiency |
|---|---|---|---|---|
| 3/32 in, 2.4 mm | 90 A | 70 - 100 | 1.7 lbs./hr., 0.8 kg./hr. | 66.3 % |
| 1/8 in, 3.2 mm | 120 A | 90 - 160 | 2.6 lbs./hr., 1.2 kg./hr. | 71.6 % |
| 140 A | 90 - 160 | 2.7 lbs./hr., 1.2 kg./hr. | 70.9 % | |
| 5/32 in, 4.0 mm | 140 A | 130 - 220 | 3.1 lbs./hr., 1.4 kg./hr. | 75 % |
| 170 A | 130 - 220 | 3.8 lbs./hr., 1.7 kg./hr. | 73.5 % | |
| 3/16 in, 4.8 mm | 200 A | 200 - 300 | 4.9 lbs./hr., 2.2 kg./hr. | 76.4 % |
| 250 A | 200 - 300 | 5.4 lbs./hr., 2.4 kg./hr. | 74.6 % | |
| 7/32 in, 5.6 mm | 250 A | 250 - 350 | 6.5 lbs./hr., 2.9 kg./hr. | 75 % |
| 300 A | 250 - 350 | 7.2 lbs./hr., 3.3 kg./hr. | 74 % | |
| 1/4 in, 6.4 mm | 300 A | 300 - 400 | 7.7 lbs./hr., 3.5 kg./hr. | 78 % |
| 350 A | 300 - 400 | 8.7 lbs./hr., 3.9 kg./hr. | 77 % |
Extra Info
Preheat is generally not required with Atom Arc 7018AC to prevent underbead cracking. Preheat should be used with hardenable steels to prevent the formation of hard heat-affected zones and eliminate tendencies toward quench cracking on cooling. Preheat may also be required in welding heavy sections.