Alloy 71T-1
Nominal Chemical
Composition
INTRODUCTION
Aufhauser Alloy 71T-1 is a general purpose, all-position flux-cored mild steel wire designed to produce superior mechanical properties that exceed the charpy v-notch impact value requirements of both E71T-1J and E71T-9J classifications. A diffusible hydrogen content of less than 8.0ml per 100 grams of deposited metal allows Aufhauser Alloy 71T-1 to adopt the "H8" designation in its classification. This outstanding wire produces X-ray quality weld deposits using either 100% CO2 or a 75% Ar/ 25% CO2 mixture shielding gas. Aufhauser Alloy 71T-1 has superb welder appeal because its smooth stable arc yields virtually spatterless weld deposits and generates very little fume. Out-of-position welding is made simple because of the fast freezing, but easily removable slag. Welders spend more time welding and less time cleaning up! Weld deposits are flat to slightly convex and have a bright luster.
APPLICATIONS
Aufhauser Alloy 71T-1 operates over a wide range of current settings allowing for a greater variety of applications using just one wire. An excellent choice for single or multiple pass laps, fillet and butt welds on many grades of carbon steel. 71T-1 is typically used in shipbuilding, railcar fabrication, pressure vessels, heavy gauge sheet metal, earth moving equipment and many ASTM specifications.
- Single or multiple pass laps, fillet and butt welds
- Shipbuilding, railcar fabrication, pressure vessels
- Heavy gauge sheet metal
- Earth moving equipment
FEATURES
- All-Position Flux-Cored Wire
- Superior Impact Value Properties
- Very Low Fume Generation
- Beautiful Bead Appearance
- Superb Operator Appeal
- Spatter-Free Welds
- Smooth, Stable Arc
- Weldable in all positions
GENERAL INFORMATION
Chemical Composition| Carbon | Manganese | Silicon | Sulfur | Phosphorus | |
|---|---|---|---|---|---|
| 100% CO2 | 0.08 | 1.22 | 0.46 | 0.008 | 0.013 |
| 75% Ar/ 25% CO2 | 0.09 | 1.41 | 0.55 | 0.009 | 0.013 |
PHYSICAL and MECHANICAL PROPERTIES
| 100% CO2 | 75% Ar/ 25% CO2 | |
| Tensile Strength (PSI) | 79,000 | 92,000 |
| Yield Strength (PSI) | 66,000 | 78,000 |
| Elongation in 2" | 28% | 26% |
| Charpy V-Notch Impact Energy @ 0°F | avg 41 ft-lb | avg 72 ft-lb |
SPECIFICATIONS MEET OR EXCEED
| AWS A5.20 E71T-1 H8, E71T-1J H8, E71T-1MJ H8 |
| AWS A5.20 E71T-9 H8, E71T-9J H8, E71T-9MJ H8 |
STANDARD SIZES AND DIAMETERS
| Diameters (inches) | Package Form |
| 0.035 | 10 lbs. spools 25 lbs. spools |
Optimum Welding Parameters
| 0.035" (0.9mm) | 0.045" (1.2mm) | 0.052" (1.3mm) | 1/16" (1.6mm) | |
|---|---|---|---|---|
| Wire Feed Speed (IPM) | 500 | 450 | 375 | 325 |
| Current (Amps) | 193 | 260 | 300 | 405 |
| Voltage (V)* | 29 | 29.5 | 29.5 | 30.5 |
Reverse Polarity (Direct Current, Electrode Positive DCEP)