Atom Arc 7018-1
Atom Arc 7018-1 is an all-position, low hydrogen electrode that provides exceptional impact toughness at low service temperatures. Atom Arc 7018-1 provides smooth metal transfer, minimal spatter, and easy slag removal. Atom Arc 7018-1 is used to join a wide variety of carbon and low alloy steels. It is also an excellent choice for welding higher strength steels if undermatching welds are specified.
Industries
- Automotive
- Civil Construction
- Industrial and General Fabrication
- Mobile Equipment
- Railcars
Welding Process
- SMAW/MMA (Stick)
Typical Weld Metal Analysis %
| Weld Metal Analysis | |||||
| Element | C | P | S | Mn | Si |
| Nominal Percentage | 0.04 % | 0.014 % | 0.015 % | 1.30 % | 0.30 % |
| Maximum Percentage | 0.30 % | ||||
Approvals
| Grade | 3Y(H10) |
| Society | DNV |
| Grade | 3m,3Ym(H10) |
| Society | LR |
| Grade | E4918-1-H4 |
| Society | CWB CSA W48 |
| Grade | 3,3Y(H10)/A5.1: E7018-1 |
| Society | ABS |
Typical Charpy V-Notch Properties
| Condition | 1 |
| Testing Temperature | -50 degF (-46 degC) |
| Condition | 2 |
| Testing Temperature | -50 degF (-46 degC) |
Classifications
| Name | ASME SFA 5.1 |
| Grade | E7018-1 H4R |
| Name | AWS A5.1 |
Consumable Characteristics
| Coating Type | Low-hydrogen iron powder |
| 0 | |
| Welding Current | AC or DC+ |
Typical Tensile Properties
| Condition | Stress Relieved | As Welded |
| Reduction in Area | 72 % | 72 % |
| Tensile Strength (imp) | 74 ksi | 81 ksi |
| Tensile Strength (met) | 510 MPa | 565 MPa |
| Yield Strength (imp) | 60 ksi | 69 ksi |
| Yield Strength (met) | 415 MPa | 475 MPa |
| Elongation | 33 % | 30 % |
Deposition Data
| Current | 130-220 A |
| Deposition Rate | 3.8 lb/h (1.7 kg/h) |
| Diameter | 5/32 in. (4.0 mm) |
| Efficiency (%) | 73.5 % |
| Optimal Amps | 170 A |
| Current | 90-160 A |
| Deposition Rate | 2.6 lb/h (1.2 kg/h) |
| Diameter | 1/8 in. (3.2 mm) |
| Efficiency (%) | 71.6 % |
| Optimal Amps | 120 A |
| Current | 200-300 A |
| Deposition Rate | 5.4 lb/h (2.4 kg/h) |
| Diameter | 3/16 in. (4.8 mm) |
| Efficiency (%) | 74.6 % |
| Optimal Amps | 250 A |
| Current | 200-300 A |
| Deposition Rate | 4.9 lb/h (2.2 kg/h) |
| Diameter | 3/16 in. (4.8 mm) |
| Efficiency (%) | 76.4 % |
| Optimal Amps | 200 A |
| Current | 70-100 A |
| Deposition Rate | 1.7 lb/h (0.8 kg/h) |
| Diameter | 3/32 in. (2.4 mm) |
| Efficiency (%) | 66.3 % |
| Optimal Amps | 90 A |
| Current | 90-160 A |
| Deposition Rate | 2.7 lb/h (1.2 kg/h) |
| Diameter | 1/8 in. (3.2 mm) |
| Efficiency (%) | 70.9 % |
| Optimal Amps | 140 A |
| Current | 250-350 A |
| Deposition Rate | 7.2 lb/h (3.3 kg/h) |
| Diameter | 7/32 in. (5.6 mm) |
| Efficiency (%) | 74 % |
| Optimal Amps | 300 A |
| Current | 250-350 A |
| Deposition Rate | 6.5 lb/h (2.9 kg/h) |
| Diameter | 7/32 in. (5.6 mm) |
| Efficiency (%) | 75 % |
| Optimal Amps | 250 A |
| Current | 300-400 A |
| Deposition Rate | 7.7 lb/h (3.5 kg/h) |
| Diameter | 1/4 in. (6.4 mm) |
| Efficiency (%) | 78 % |
| Optimal Amps | 300 A |
| Current | 300-400 A |
| Deposition Rate | 8.7 lb/h (3.9 kg/h) |
| Diameter | 1/4 in. (6.4 mm) |
| Efficiency (%) | 77 % |
| Optimal Amps | 350 A |
| Current | 130-220 A |
| Deposition Rate | 3.1 lb/h (1.4 kg/h) |
| Diameter | 5/32 in. (4.0 mm) |
| Efficiency (%) | 75 % |
| Optimal Amps | 140 A |