Atom Arc 7018-M is an E7018M all-position low hydrogen electrode specially formulated to meet the more stringent requirements of Military Specification MIL-E-0022200/10.
Atom Arc 7018-M is an all-position low hydrogen electrode specially formulated to meet the more stringent requirements of Military Specification MIL-E-0022200/10 for mechanical properties, coating moisture and diffusible hydrogen content. Atom Arc 7018-M was intended for welding carbon steels, as well as high tensile steels, such as Grade HT of MIL-S-16113 and MIL-S-22698. It is also used for attachment welds to HY-80 and HY-100.

| As Welded | |
|---|---|
| Yield Strength | 69 ksi, 475 MPa |
| Tensile Strength | 80 ksi, 550 MPa |
| Elongation in 2" | 30 % |
| Reduction in Area | 72 % |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | |
| Yield Strength | 57 ksi, 395 MPa |
| Tensile Strength | 71 ksi, 490 MPa |
| Reduction in Area | 76 % |
| Elongation in 2" | 36 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature -20ºF (-29ºC) | |
| As Welded | 114 ft.-lbs., 155 J |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | 166 ft.-lbs., 225 J |
| Typical Undiluted Weld Metal Analysis | |
| C | 0.04 % |
| Mn | 1.0 % |
| Si | 0.3 % |
| P | 0.013 % |
| S | 0.013 % |
| Mo | 0.1 % |
| Part No. | Model / Product Description | UPC |
|---|---|---|
| 255014003 | AA 7018-M 3/32X14X50#HS | 662303016234 |
| 255014003-03 | AA 7018-M 3/32X14X50#HS | 662303055431 |
| 255014003-25 | AA 7018-M 3/32X14X50#HS | 662303058982 |
| 255014003-34 | AA 7018-M 3/32X14X50#HS | 662303058012 |
| 255014011 | AA 7018-M 1/8X14X50#HS | 662303016241 |
| 255014011-03 | AA 7018-M 1/8X14X50#HS | 662303055417 |
| 255014011-25 | AA 7018-M 1/8X14X50#HS | 662303056926 |
| 255014011-34 | AA 7018-M 1/8X14X50#HS | 662303058029 |
| 255014029 | AA 7018-M 5/32X14X50#HS | 662303016258 |
| 255014029-03 | AA 7018-M 5/32X14X50#HS | 662303055448 |
| 255014037 | AA 7018-M 3/16X14X50#HS | 662303016265 |
| 255014037-03 | AA 7018-M 3/16X14X50#HS | 662303055424 |
| 255014045 | AA 7018-M 7/32X18X50#HS | 662303016272 |
| 255014045-03 | AA 7018-M 7/32X18X50#HS | 662303057749 |
| 255014052 | AA 7018-M 1/4X18X50#HS | 662303016289 |
| 255017501 | AA 7018-M 3/32X12X40#HS | 662303016579 |
| 255118101 | GD 7018-M 3/16X14X50#HS | 662303054724 |
| 255014102 | AA 7018-M 3/32X14X10#HS | 662303016296 |
| 255014102-03 | AA 7018-M 3/32X14X10#HS/60# | 662303057152 |
| 255014110 | AA 7018-M 1/8X14X10#HS | 662303016302 |
| 255014110-05 | AA 7018-M 1/8X14X10#HS | 662303059224 |
| 255014128 | AA 7018-M 5/32X14X10#HS | 662303016319 |
| 255014136 | AA 7018-M 3/16X14X10#HS | 662303016326 |
| 255014151 | AA 7018-M 1/4X18X10#HS | 662303067946 |
| 255118051 | GD 7018-M 3/32X12X40#HS | 662303029272 |
| 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-M 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.