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.
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.

| 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 % |
| Part No. | Model / Product Description | UPC |
|---|---|---|
| 255028508 | AA 7018-AC 3/32X14X50#HS | 662303016586 |
| 255028516 | AA 7018-AC 1/8X14X50#HS | 662303016593 |
| 255028524 | AA 7018-AC 5/32X14X50#HS | 662303016609 |
| 255028573 | AA 7018-AC 1/8X14X10#HS | 662303016616 |
| 255028581 | AA 7018-AC 3/32X14X10#HS | 662303016623 |
| 255028599 | AA 7018-AC 5/32X14X10#HS | 662303016630 |
| 255028623 | AA 7018-AC 1/8X14X5#VALP | 662303029135 |
| 255028631 | AA 7018-AC 3/32X14X5#VALP | 662303029142 |
| 255028649 | AA 7018-AC 1/8X14X10#VALP | 662303029159 |
| 255028656 | AA 7018-AC 3/32X14X10#VALP | 662303029166 |
| 255028664 | AA 7018-AC 5/32X14X5#VALP | 662303029173 |
| 255028672 | AA 7018-AC 5/32X14X10#VALP | 662303029180 |
| 255028680 | AA 7018-AC 3/32X14X11#QP | 662303029197 |
| 255028698 | AA 7018-AC 1/8X14X11#QP | 662303037819 |
| 255028706 | AA 7018-AC 5/32X14X11#QP | 662303029210 |
| 255028771 | AA 7018-AC 3/32X12X8#QP | 662303041762 |
| 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 % |
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.
All listed prices are in U.S. dollars and represent the Manufacturer's Suggested Retail Price (MSRP) for sale in the United States. Actual selling price will be determined by the Distributor. Prices are subject to change without notice.