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ATOM ARC 8018-SR
Atom Arc 8018-SR is an E8018-G all-position low hydrogen electrode designed for stress relieving applications
Features
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.
View large imageClassifications
Classifications/Approvals
- SFA/AWS A5.5; E8018-GH4R
Properties
| 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 % |
SAW
Accessories
Depositions
| 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 % |
Extra Info
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