Atom Arc 7018-SR is an E7018 all-position low hydrogen electrode designed to maintain 70 ksi (483 MPa) when used in stress relieving applications.
Atom Arc 7018-SR is an all-position low hydrogen electrode. The moisture resistance and welder appeal is similar to other Atom Arc electrodes. Atom Arc 7018-SR was developed to maintain 70 ksi (483 MPa) tensile strength after 16 hours stress relieving.

| As Welded | |
|---|---|
| Yield Strength | 68 ksi, 475 MPa |
| Tensile Strength | 83 ksi, 575 MPa |
| Elongation in 2" | 32 % |
| Reduction in Area | 76 % |
| Stress Relieved 8 hrs. @ 1150ºF (621ºC) | |
| Yield Strength | 61 ksi, 420 MPa |
| Tensile Strength | 76 ksi, 520 MPa |
| Reduction in Area | 76 % |
| Elongation in 2" | 35 % |
| Stress Relieved 16 hrs. @ 1150ºF (621ºC) | |
| Yield Strength | 59 ksi, 405 MPa |
| Tensile Strength | 74 ksi, 510 MPa |
| Reduction in Area | 77 % |
| Elongation in 2" | 35 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature -20ºF (-29ºC) | |
| As Welded | 114 ft.-lbs., 195 J |
| Stress Relieved 8 hrs. @ 1150ºF (621ºC) | 133 ft.-lbs., 180 J |
| Stress Relieved 16 hrs. @ 1150ºF (621ºC) | 185 ft.-lbs., 250 J |
| Typical Undiluted Weld Metal Analysis | |
| C | 0.06 % |
| Mn | 1.3 % |
| Si | 0.3 % |
| P | 0.014 % |
| S | 0.014 % |
| Mo | 0.1 % |
| Part No. | Model / Product Description | UPC |
|---|---|---|
| 255325003 | AA 7018-SR 3/32X14X50#HS | 662303016692 |
| 255325011 | AA 7018-SR 1/8X14X50#HS | 662303016708 |
| 255325029 | AA 7018-SR 5/32X14X50#HS | 662303016715 |
| 255325029-21 | AA 7018-SR 5/32X14X50#HS | 662303059699 |
| 255325037 | AA 7018-SR 3/16X14X50#HS | 662303016722 |
| 255325045 | AA 7018-SR 7/32X18X50#HS | 662303016739 |
| 255325052 | AA 7018-SR 1/4X18X50#HS | 662303016746 |
| 255325060 | AA 7018-SR 1/8X14X10#HS | 662303016753 |
| 255325078 | AA 7018-SR 3/32X14X10#HS | 662303016760 |
| 255325086 | AA 7018-SR 5/32X14X10#HS | 662303016777 |
| 255325003-21 | AA 7018-SR 3/32X14X50#HS S/L | 662303057206 |
| 255325011-21 | AA 7018-SR 1/8X14X50#HS S/L | 662303057190 |
| 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 % |
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.