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ATOM ARC 8018-N
Atom Arc 8018-N is an all-position low hydrogen electrode that deposits weld metal with 3% Ni content. This electrode is used when low temperature notch toughness values are required.
Features
Atom Arc 8018-N electrodes produce excellent weld properties and are used to fabricate components where low temperature notch toughness values are required. Atom Arc 8018-N is also recommended for welding the 2% to 4% Ni steels.
View large imageClassifications
Classifications/Approvals
- ASME SFA 5.5
Properties
| As Welded | |
|---|---|
| Yield Strength | 91 ksi, 625 MPa |
| Tensile Strength | 101 ksi, 695 MPa |
| Elongation in 2" | 26 % |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | |
| Yield Strength | 80 ksi, 550 MPa |
| Tensile Strength | 92 ksi, 635 MPa |
| Reduction in Area | 74 % |
| Elongation in 2" | 28 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature -50ºF (-46ºC) | |
| As Welded | 57 ft.-lbs., 77 J |
| Testing Temperature -100ºF (-73ºC) | |
| As Welded | 35 ft.-lbs., 47 J |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | 24 ft.-lbs., 33 J |
| Typical Undiluted Weld Metal Analysis | |
| C | .044 % |
| Mn | 1.02 % |
| Si | .25 % |
| P | .011 % |
| S | .011 % |
| Ni | 3.20 % |
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.