Atom Arc 7018-1 is an all-position low hydrogen iron powder electrode that displays exceptional impacts at low temperatures in both the as-welded and stress-relieved conditions. Smooth metal transfer keeps spatter to a minimum, and the complete slag coverage is designed for easy removal.
Atom Arc 7018-1 is an all-position, low hydrogen electrode that provides exceptional impact toughness at low service temperatures. Atom Arc 7018-1 provides smooth metal transfer, minimal spatter, and easy slag removal. Atom Arc 7018-1 is used to join a wide variety of carbon and low alloy steels. It is also an excellent choice for welding higher strength steels if undermatching welds are specified.

| As Welded | |
|---|---|
| Yield Strength | 69 ksi, 475 MPa |
| Tensile Strength | 81 ksi, 565 MPa |
| Elongation in 2" | 30 % |
| Reduction in Area | 72 % |
| Stress Relieved 8 hrs. @ 1150ºF (621ºC) | |
| Yield Strength | 60 ksi, 415 MPa |
| Tensile Strength | 74 ksi, 510 MPa |
| Reduction in Area | 72 % |
| Elongation in 2" | 33 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature -50ºF (-46ºC) | |
| As Welded | 104 ft.-lbs., 141 J |
| Stress Relieved 8 hrs. @ 1150ºF (621ºC) | 165 ft.-lbs., 224 J |
| Typical Undiluted Weld Metal Analysis | |
| C | 0.04 % |
| Mn | 1.3 % |
| Si | 0.3 % |
| P | 0.014 % |
| S | 0.015 % |
| Part No. | Model / Product Description | UPC |
|---|---|---|
| 255011447 | AA 7018-1 1/4X18X50#HS | 662303016067 |
| 255011843 | AA 7018-1 1/8X14X50#HS | 662303016104 |
| 255013146 | AA 7018-1 3/16X14X50#HS | 662303016159 |
| 255013344 | AA 7018-1 3/32X14X50#HS | 662303016203 |
| 255015349 | AA 7018-1 5/32X14X50#HS | 662303016395 |
| 255017345 | AA 7018-1 7/32X18X50#HS | 662303016562 |
| 255011298 | AA 7018-1 3/32X14X11#QP | 662303028855 |
| 255011306 | AA 7018-1 1/8X14X11#QP | 662303028862 |
| 255011314 | AA 7018-1 5/32X14X11#QP | 662303028879 |
| 255011322 | AA 7018-1 3/16X14X11#QP | 662303028886 |
| 255011348 | AA 7018-1 3/16X18X11#QP | 662303028893 |
| 255011355 | AA 7018-1 1/4X18X11#QP | 662303028909 |
| 255011553 | AA 7018-1 3/32X12X8#QP | 662303041755 |
| 255011850 | AA 7018-1 1/8X14X10#HS | 662303016111 |
| 255013153 | AA 7018-1 3/16X14X10#HS | 662303016166 |
| 255013351 | AA 7018-1 3/32X14X10#HS | 662303016210 |
| 255015356 | AA 7018-1 5/32X14X10#HS | 662303016401 |
| 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 7018-1 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.