Atom Arc 8018-SR is an E8018-G all-position low hydrogen electrode designed for stress relieving applications
Atom Arc 8018-SR is an all-position low hydrogen electrode. The moisture resistance and welder appeal is similar to other Atom Arc electrodes. Atom Arc 8018-SR was developed to maintain 80 ksi (552 MPa) after 50 hours stress relieving.

| As Welded | |
|---|---|
| Reduction in Area | 160 % |
| Stress Relieved 8 hrs. @ 1150ºF (621ºC) | |
| Yield Strength | 71 ksi, 490 MPa |
| Tensile Strength | 85 ksi, 587 MPa |
| Elongation in 2" | 29 % |
| Stress Relieved 20 hrs. @ 1150ºF (621ºC) | |
| Yield Strength | 72 ksi, 495 MPa |
| Tensile Strength | 85 ksi, 580 MPa |
| Reduction in Area | 76 % |
| Elongation in 2" | 30 % |
| Stress Relieved 50 hrs. @ 1150ºF (621ºC) | |
| Yield Strength | 69 ksi, 470 MPa |
| Tensile Strength | 82 ksi, 562 MPa |
| Reduction in Area | 76 |
| Elongation in 2" | 32 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature 60ºF (16ºC) | |
| Stress Relieved 8 hrs. @ 1150ºF (621ºC) | 160 ft.-lbs., 217 J |
| Stress Relieved 20 hrs. @ 1150ºF (621ºC) | 172 ft.-lbs., 233 J |
| Stress Relieved 50 hrs. @ 1150ºF (621ºC) | 165 ft.-lbs., 224 J |
| Testing Temperature -50ºF (-46ºC) | |
| Stress Relieved 8 hrs. @ 1150ºF (621ºC) | 108 ft.-lbs., 146 J |
| Stress Relieved 20 hrs. @ 1150ºF (621ºC) | 106 ft.-lbs., 144 J |
| Stress Relieved 50 hrs. @ 1150ºF (621ºC) | 114 ft.-lbs., 155 J |
| Typical Undiluted Weld Metal Analysis | |
| C | 0.08 % |
| Mn | 1.10 % |
| Si | 0.3 % |
| P | 0.014 % |
| Cr | 0.007 % |
| Ni | 1.0 % |
| Mo | 0.3 % |
| Part No. | Model / Product Description | UPC |
|---|---|---|
| 255041832 | AA 8018-SR 1/8X14X50#HS | 662303017064 |
| 255043135 | AA 8018-SR 3/16X14X50#HS | 662303017095 |
| 255043143 | AA 8018-SR 3/32X14X50#HS | 662303017101 |
| 255045338 | AA 8018-SR 5/32X14X50#HS | 662303017132 |
| 255041840 | AA 8018-SR 1/8X14X10#HS | 662303054366 |
| 255041857 | AA 8018-SR 5/32X14X10#HS | 662303054373 |
| 255043150 | AA 8018-SR 7/32X18X50#HS | 662303044626 |
| 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 should be used on hardenable steels to prevent the formation of a hard heat-affected zone. 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.