Atom Arc 8018-SR
Atom Arc 8018-SR is an all-position low hydrogen electrode. The moisture resistance and welder appeal is similar to other Atom Arc electrodes. Atom Arc 8018-SR was developed to maintain 80 ksi (552 MPa) after 50 hours stress relieving.
Industries
- Power Generation
Welding Process
- SMAW/MMA (Stick)
Typical Charpy V-Notch Properties
| Impact Value | Testing Temperature | |||
| stress relieved | ||||
| 146 J (108 ft-lb) | 8 hr | 621 degC (1150 degF) | -46 degC (-50 degF) | |
| 144 J (106 ft-lb) | 20 hr | 621 degC (1150 degF) | -46 degC (-50 degF) | |
| 155 J (114 ft-lb) | 50 hr | 621 degC (1150 degF) | -46 degC (-50 degF) | |
| 217 J (160 ft-lb) | 8 hr | 621 degC (1150 degF) | 16 degC (60 degF) | |
| 233 J (172 ft-lb) | 20 hr | 621 degC (1150 degF) | 16 degC (60 degF) | |
| 224 J (165 ft-lb) | 50 hr | 621 degC (1150 degF) | 16 degC (60 degF) | |
Typical Tensile Properties
| Condition | Stress Relieved | Stress Relieved | Stress Relieved |
| Reduction in Area | 75 % | 78 % | 76 % |
| Tensile Strength | 587 MPa (85 ksi) | 562 MPa (82 ksi) | 580 MPa (85 ksi) |
| Yield Strength | 490 MPa (71 ksi) | 470 MPa (69 ksi) | 495 MPa (72 ksi) |
| Elongation | 29 % | 32 % | 30 % |
| Testing Time | 8 hr | 50 hr | 20 hr |
| Testing Temperature | 621 degC (1150 degF) | 621 degC (1150 degF) | 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 |
| 130-220 A | 1.1 kg/h (3.1 lb/h) | 4.0 mm (5/32 in.) | 75 % | 140 A |
Classifications
| Classifications |
ASME SFA 5.5 : AWS A5.5 : E8018-G H4R |
Consumable Characteristics
| Coating Type | Low-hydrogen iron powder |
| 0 | |
| Welding Current | AC or DC+ |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Cr | Cu | Mn | Mo | Nb | Ni | P | Si | V | |||||
| 0.075 % | 0.10 % | 0.114 % | 1.12 % | 0.26 % | 0.003 % | 0.90 % | 0.01 % | 0.34 % | 0.009 % | |||||
Part Numbers and Accessories
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