Alloy Type: A5.20, CARBON STEEL Flux Cored Arc Welding Electrodes
Description:
E71T-8-H8 is a self-shielded, carbon steel, flux cored electrode. It is intended for the welding without a shielding gas of carbon and certain low alloy steels where excellent low temperature toughness is required. A fast freezing slag facilitates welding in all positions. It has a smooth globular transfer, excellent bead shape and easily removed slag. E71T-8-H8 is designed for structural applications such as bridge fabrication, ship and barge construction, as well as other general fabrication.
Classification & Approvals:
- E71T-8-H8 per AWS A5.20, ASME SFA 5.20
- E71T8-A2-CS3-H8 per AWS A5.36, ASME SFA 5.36
- AWS D1.8 Seismic, CWB E491T-8-H8, ABS 3YSA, DNV IIIYMS
Advantages:
- Operates on straight polarity (DCEN) with no external shielding gas.
- Fast freezing slag facilitates excellent weldability in all positions.
- Exhibits a smooth globular transfer, minimal spatter and easily removed slag.
Typical Mechanical Properties:
Ultimate Tensile Strength (psi) 87,000
Yield Strength (psi) 64,000
Percent Elongation 27
Typical Deposit Composition (wt%):
CMnSi P S Al
0.210.720.20 0.010 0.005 0.55
Recommended Welding Parameters (DCEN):
| Diameter | WFS | AMPERAGE | VOLTAGE | CTWD (IN.) |
| 1/16″ | 120 | 165 | 17-18 | 5/8 |
| 170 | 200 | 18-19 | 3/4 | |
| 220 | 235 | 20-21 | 1 | |
| 270 | 270 | 21-22 | 1 | |
| 350 | 310 | 23-24 | 1 | |
| .072″ | 125 | 185 | 18-19 | 3/4 |
| 175 | 220 | 20-21 | 1 | |
| 200 | 245 | 21-23 | 1 | |
| 225 | 265 | 22-24 | 1 | |
| 250 | 275 | 22-24 | 1 | |
| 5/64″ | 60 | 140 | 17-18 | 3/4 |
| 100 | 210 | 18-19 | 3/4 | |
| 150 | 255 | 21-22 | 1 | |
| 200 | 300 | 22-23 | 1 | |
| 250 | 330 | 23-24 | 1 |
*These parameters may be used in all positions. The ability to weld out of position at the higher current levels will depend on plate thickness and welder skill.
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