Dual Shield II 70T-12H4
Each of the new Dual Shield II H4 wires is an all-position flux cored wire that provides excellent low temperature toughness in both the as welded and/or stress relieved conditions (as applicable) when used with 75% Ar / 25% CO2. Each can produce diffusible hydrogen levels of 4 mL/100g over a wide range of welding parameters. Dual Shield II 70T-12H4 also provides the smooth arc and low spatter levels characteristic of other Dual Shield II wires. Dual Shield II 70T-12H4 can be used in construction, heavy equipment fabrication, offshore oil components, shipbuilding, and railcar. Weld metal analysis is similar to E7018.
Industries
- Bridge Construction
- Civil Construction
- Industrial and General Fabrication
- Mobile Equipment
- Railcars
- Ship/Barge Building
Welding Process
- FCAW (Flux Core)
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Mn | P | S | Si | ||||||||||
| 75% Ar - 25% CO2 | ||||||||||||||
| 0.049 % | 1.18 % | 0.012 % | 0.007 % | 0.37 % | ||||||||||
Approvals
| Approvals |
ABS CWB CSA W48 E491T-12MJ-H4 DNV-GL LR |
| Approvals are based on factory location. Please contact ESAB for more information. |
Typical Charpy V-Notch Properties
| Testing Temperature | -29 degC |
| Testing Temperature | -20 degF |
| 2 hr | |
| 621 degC | |
| 1150 degF | |
| Shielding Gas | 75% Ar - 25% CO2 |
| Impact Value | 103 J |
| Impact Value | 76 ft-lb |
| Stress Relieved | |
Classifications
|
ASME SFA 5.36 : ASME SFA 5.20 : AWS A5.36 : E71T1-M21P2-CS2-H4 AWS A5.36 : E71T1-M21A4-CS2-H4 AWS A5.20 : E71T-1MJ-H4/T-9MJ-H4/T-12MJ-H4 |
Typical Tensile Properties
| Condition | As Welded | Stress Relieved |
| Reduction in Area | 71 % | 73 % |
| Shielding Gas | 75% Ar - 25% CO2 | 75% Ar - 25% CO2 |
| Tensile Strength | 550 MPa(80 ksi) | 540 MPa(78 ksi) |
| Yield Strength | 495 MPa(72 ksi) | 460 MPa(68 ksi) |
| Elongation | 27 % | 30 % |
| Testing Time | 2 hr | |
| Testing Temperature | 621 degC(1150 degF) |
Recommended Welding Parameters
| Current | TTW Dist. | Voltage | Wire Diameter | Wire Feed Speed |
| 75% Ar - 25% CO2 | ||||
| 130-220 A | 12.7-16 mm(1/2-5/8 in.) | 22-26 V | 1.2 mm(.045 in.) | 249-508 cm/min(110-200 in./min) |
| 220-280 A | 16-19 mm(5/8-3/4 in.) | 25-29 V | 1.2 mm(.045 in.) | 508-762 cm/min(200-300 in./min) |
| 280-320 A | 19-25.4 mm(3/4-1 in.) | 26-31 V | 1.2 mm(.045 in.) | 762-1016 cm/min(300-400 in./min) |
| 135-250 A | 25.4-16 mm(1/2-5/8 in.) | 22-26 V | 1.4 mm(.052 in.) | 279-584 cm/min(110-230 in./min) |
| 250-280 A | 16-19 mm(5/8-3/4 in.) | 25-29 V | 1.4 mm(.052 in.) | 584-762 cm/min(230-300 in./min) |
| 280-330 A | 19-25.4 mm(3/4-1 in.) | 26-31 V | 1.4 mm(.052 in.) | 762-1016 cm/min(300-400 in./min) |
| 185-290 A | 16-25.4 mm(5/8-1 in.) | 24-28 V | 1.6 mm(1/16 in.) | 279-559 cm/min(110-220 in./min) |
| 290-350 A | 25.4-31.75 mm(1-1.25 in.) | 26-30 V | 1.6 mm(1/16 in.) | 559-838 cm/min(220-330 in./min) |
Deposition Data
| Current | Deposition Rate | Diameter | Efficiency (%) | Voltage | Wire Feed Speed |
| C - 25 | |||||
| 145 A | 1.72 kg/h(3.8 lb/h) | 1.2 mm(.045 in.) | 81.5 % | 24.5 V | 508 cm/min(200 in./min) |
| 195 A | 2.63 kg/h(5.8 lb/h) | 1.2 mm(.045 in.) | 81.8 % | 26 V | 762 cm/min(300 in./min) |
| 245 A | 3.58 kg/h(7.9 lb/h) | 1.2 mm(.045 in.) | 82.9 % | 27.5 V | 1016 cm/min(400 in./min) |
| 285 A | 4.49 kg/h(9.9 lb/h) | 1.2 mm(.045 in.) | 84.6 % | 29 V | 1270 cm/min(500 in./min) |
| 155 A | 1.58 kg/h(3.5 lb/h) | 1.4 mm(.052 in.) | 72.3 % | 24 V | 381 cm/min(150 in./min) |
| 185 A | 2.44 kg/h(5.4 lb/h) | 1.4 mm(.052 in.) | 82.1 % | 25 V | 508 cm/min(200 in./min) |
| 250 A | 3.67 kg/h(8.1 lb/h) | 1.4 mm(.052 in.) | 83.6 % | 26.5 V | 762 cm/min(300 in./min) |
| 305 A | 5.03 kg/h(11.1 lb/h) | 1.4 mm(.052 in.) | 85.2 % | 28 V | 1016 cm/min(400 in./min) |
| 190 A | 2.40 kg/h(5.3 lb/h) | 1.6 mm(1/16 in.) | 80.3 % | 24 V | 381 cm/min(150 in./min) |
| 295 A | 3.90 kg/h(8.6 lb/h) | 1.6 mm(1/16 in.) | 80.8 % | 25 V | 635 cm/min(250 in./min) |
| 335 A | 4.89 kg/h(10.8 lb/h) | 1.6 mm(1/16 in.) | 85.4 % | 26 V | 762 cm/min(300 in./min) |
| 365 A | 5.85 kg/h(12.9 lb/h) | 1.6 mm(1/16 in.) | 86.9 % | 27 V | 889 cm/min(350 in./min) |
| 410 A | 6.80 kg/h(15.0 lb/h) | 1.6 mm(1/16 in.) | 87.9 % | 28 V | 1016 cm/min(400 in./min) |