Atom Arc 7018
Atom Arc 7018 is an all-position low hydrogen moisture resistant electrode with a deep, penetrating arc. This premium quality electrode meets a multitude of codes and welding specifications. Atom Arc 7018 was developed to weld carbon and low-alloy steels, including a variety of hardenable steels.
Industries
- Automotive
- Bridge Construction
- Civil Construction
- Industrial and General Fabrication
- Mobile Equipment
- Railcars
- Ship/Barge Building
Welding Process
- SMAW/MMA (Stick)
Typical Charpy V-Notch Properties
| Stress Relieved | |
| Impact Value | 193 ft-lb |
| Impact Value | 260 J |
| 1150 °F | |
| 621 °C | |
| 8 hr | |
| Testing Temperature | -20 °F |
| Testing Temperature | -29 °C |
Typical Tensile Properties
| Condition | As Welded | Stress Relieved |
| Reduction in Area | 75 % | 77 % |
| Tensile Strength | 540 MPa (78 ksi) | 485 MPa (70 ksi) |
| Yield Strength | 470 MPa (68 ksi) | 395 MPa (57 ksi) |
| Elongation | 30 % | 33 % |
| Testing Time | 8 hr | |
| Testing Temperature | 621 degC (1150 degF) |
Deposition Data
| Current | Deposition Rate | Diameter | Deposition Efficiency (%) | Optimal Amps | |||
| 130-220 A | 1.7 kg/h (3.8 lb/h) | - | 4.0 mm (5/32 in.) | 73.5 % | - | 170 A | - |
| 90-160 A | 1.2 kg/h (2.6 lb/h) | - | 3.2 mm (1/8 in.) | 71.6 % | - | 120 A | - |
| 200-300 A | 2.4 kg/h (5.4 lb/h) | - | 4.8 mm (3/16 in.) | 74.6 % | - | 250 A | - |
| 200-300 A | 2.2 kg/h (4.9 lb/h) | - | 4.8 mm (3/16 in.) | 76.4 % | - | 200 A | - |
| 70-100 A | 0.8 kg/h (1.7 lb/h) | - | 2.4 mm (3/32 in.) | 66.3 % | - | 90 A | - |
| 90-160 A | 1.2 kg/h (2.7 lb/h) | - | 3.2 mm (1/8 in.) | 70.9 % | - | 140 A | - |
| 250-350 A | 3.3 kg/h (7.2 lb/h) | - | 5.6 mm (7/32 in.) | 74 % | - | 300 A | - |
| 250-350 A | 2.9 kg/h (6.5 lb/h) | - | 5.6 mm (7/32 in.) | 75 % | - | 250 A | - |
| 300-400 A | 3.5 kg/h (7.7 lb/h) | - | 6.4 mm (1/4 in.) | 78 % | - | 300 A | - |
| 300-400 A | 3.9 kg/h (8.7 lb/h) | - | 6.4 mm (1/4 in.) | 77 % | - | 350 A | - |
| 130-220 A | 1.4 kg/h (3.1 lb/h) | - | 4.0 mm (5/32 in.) | 75 % | - | 140 A | - |
Classifications
| Classifications |
ASME SFA 5.1 : AWS A5.1 : E7018 H4R |
Approvals
| Approvals |
ABS 3Y/AWS A5.1: E7018 CWB CSA W48 E4918 DNV 3Y(H10) LR 3m,3Ym(H10) MIL-E-22200/1 MIL-7018 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Coating Type | Low-hydrogen iron powder |
| 0 | |
| Welding Current | AC or DC+ |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Mn | P | S | Si | ||||||||||
| 0.045 % | 1.10 % | 0.015 % | 0.014 % | 0.40 % | ||||||||||
| 0.05 % | 0.40 % | |||||||||||||