Atom Arc 9018 is an all-position low hydrogen electrode designed for use on high-tensile quenched and tempered steels.
Atom Arc 9018 electrodes are used for attachment welds on T-1, HY-80 and HY-90 steels and other high tensile, quenched and tempered steels.

| As Welded | |
|---|---|
| Yield Strength | 84 ksi, 580 MPa |
| Tensile Strength | 95 ksi, 655 MPa |
| Reduction in Area | 69 % |
| Elongation in 2" | 28 % |
| Stress Relieved 24 hrs. @ 1100ºF (593ºC) | |
| Yield Strength | 68 ksi, 470 MPa |
| Tensile Strength | 92 ksi, 635 MPa |
| Reduction in Area | 72 % |
| Elongation in 2" | 27 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature -60ºF (-51ºC) | |
| As Welded | 60 ft.-lbs., 81 J |
| Stress Relieved 24 hrs. @ 1100ºF (593ºC) | 66 ft.-lbs., 92 J |
| Typical Undiluted Weld Metal Analysis | |
| C | .043 % |
| Mn | 1.00 % |
| Si | .26 % |
| P | .012 % |
| S | .010 % |
| Ni | 1.60 % |
| Mo | .29 % |
| Part No. | Model / Product Description | UPC |
|---|---|---|
| 255061418 | AA 9018 1/4X18X50#HS | 662303017293 |
| 255061806 | AA 9018 3/32X14X50#HS | 662303017323 |
| 255061814 | AA 9018 1/8X14X50#HS | 662303017330 |
| 255061814-03 | AA 9018 1/8X14X50#HS | 662303060206 |
| 255063117 | AA 9018 3/16X14X50#HS | 662303017354 |
| 255065310 | AA 9018 5/32X14X50#HS | 662303017385 |
| 255067316 | AA 9018 7/32X18X50#HS | 662303025946 |
| 255061798 | AA 9018 3/32X14X10#HS | 662303017316 |
| 255061822 | AA 9018 1/8X14X10#HS | 662303017347 |
| 255063125 | AA 9018 3/16X14X10#HS | 662303017361 |
| 255065328 | AA 9018 5/32X14X10#HS | 662303017392 |
| 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.