E71T-1 Flux-Cored Welding Wire
E71T-1 welding wire is designed for welding structures made from mild steels and 490 MPa grade high tensile steels, such as ships, offshore platforms, pressure vessels, and pipelines. The deposited weld metal provides good plasticity and low-temperature impact toughness, making it suitable for demanding structural applications.
Key Specifications
Flux Type: Rutile
Welding Positions: Flat (F), Horizontal (H), Horizontal Fillet (HF), Overhead (OH), Vertical (V), Vertical Down (VD)
Compatible Current: DCEP
Usage Notices:
Keep the wire dry and properly packaged to prevent rust.
Ensure surfaces are clean and free from oil, rust, and moisture.
Maintain shield gas flow rate between 20–25 L/min.
Wire stick-out should be 15–25 mm.
Chemical Composition of Deposited Metal (%)
| Element | C | Mn | Si | P | S |
|---|---|---|---|---|---|
| Standard | ≤0.18 | ≤2.00 | ≤0.90 | ≤0.030 | ≤0.030 |
| Typical | 0.055 | 1.32 | 0.40 | 0.018 | 0.009 |
Mechanical Properties of Deposited Metal (AW)
| Property | Tensile Strength Rm (MPa) | Yield Strength ReL/Rp0.2 (MPa) | Elongation A4 (%) | -20°C Impact Value KV2 (J) |
|---|---|---|---|---|
| Standard | 490–670 | ≥390 | ≥18 | ≥27 |
| Typical | 535 | 440 | 32 | 110 |
Sizes & Recommended Welding Currents (A)
| Wire Diameter (mm) | 1.0 | 1.2 | 1.4 | 1.6 |
|---|---|---|---|---|
| F Current | 100–280 | 120–300 | 150–380 | 180–430 |
| HF Current | 100–280 | 120–280 | 150–320 | 180–380 |
| V/OH Current | 80–260 | 120–260 | 150–270 | 180–280 |
| H Current | 100–260 | 120–280 | 150–320 | 180–330 |
| VD Current | 100–260 | 200–280 | 220–300 | 250–300 |