ATOM ARC 7018-Mo
El Atom Arc 7018-Mo es un electrodo E7018-A1 para sodadura fuera de posición bajo en Hidrògeno, recomendado para soldadura de aceros de alta tensiòn de baja aleaciòn, y aceros de 0.5% Mo.
Features
Los Electrodos Atom Arc 7018-Mo contienen un 0.5% de Mo. Como aleaciòn adicional. Son recomendados para soldaduras de aceros de alta tensiòn de baja aleaciòn de 50 ksi (345 Mpa), como rendimiento mìnimo de fuerza, y tambièn para tuberìa de acero con 0.5% de Molibdeno. Son usados ampliamente en la fabricaciòn de calentadores de agua, tuberìa de presiòn, y en envases de presiòn para otras aplicaciones.
View large imageClassifications
Classifications/Approvals
- MIL-E-0022200/7 MIL-7018-A1
- A.B.S.- AWS A5.5; E7018-A1
Properties
| As Welded | |
|---|---|
| Yield Strength | 75 ksi, 515 MPa |
| Tensile Strength | 87 ksi, 600 MPa |
| Reduction of Area | 72 % |
| Elongation in 2" | 30 % |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | |
| Yield Strength | 74 ksi, 510 MPa |
| Tensile Strength | 86 ksi, 595 MPa |
| Reduction of Area | 72 % |
| Elongation in 2" | 30 % |
| Stress Relieved 8 hrs. @ 1150ºF (621ºC) | |
| Yield Strength | 73 ksi, 505 MPa |
| Tensile Strength | 84 ksi, 585 MPa |
| Reduction of Area | 74 % |
| Elongation in 2" | 30 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature @ 72ºF (22ºC) | |
| As Welded | 98 ft.-lbs., 133 J |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | 98 ft.-lbs., 133 J |
| Testing Temperature @ 0ºF (-17ºC) | |
| As Welded | 70 ft.-lbs., 95 J |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | 68 ft.-lbs., 92 J |
| Testing Temperature @ -20ºF (-28ºC) | |
| As Welded | 68 ft.-lbs., 92 J |
| Stress Relieved 1 hr. @ 1150ºF (621ºC) | 52 ft.-lbs., 71 J |
| Typical Undiluted Weld Metal Analysis | |
| C | 0.04 % |
| Mn | 0.75 % |
| Si | 0.42 % |
| P | 0.017 % |
| S | 0.014 % |
| Mo | 0.53 % |
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
El precalentamiento se debe usar en aceros endurecibles para prevenir la formaciòn de una zona dura afectada por el calor. El precalentamiento puede ser requerido para soldar secciones pesadas.