GEN 2594 Overview
GEN 2594 provides matching chemistry and mechanical property characteristics to wrought superduplex alloys such as 2507 and Zeron 100, as well as to superduplex casting alloys (ASTM A890). The welding wire is overalloyed 2-3 percent in Nickel to provide the optimum ferrite/austenite ratio in the finished weld. This structure results in high tensile/yield strength and superior resistance to SCC and pitting corrosion.
AWS Chemical Composition (Typical)
| %C | %Cr | %Ni | %Mo | %Mn | %Cu |
|---|---|---|---|---|---|
|
0.03 max 0.01 |
24.0 – 27.0 25.0 |
8.0 – 10.5 9.2 |
2.5 – 4.5 3.9 |
2.5 max 0.6 |
1.5 max 0.09 |
| %Si | %P | %S | %W | %N |
|---|---|---|---|---|
|
1.0 max 0.4 |
0.03 max 0.02 |
0.02 max 0.01 |
1.0 max 0.02 |
0.08 – 0.20 0.25 |
Typical Weld Metal Mechanical Properties
| Tensile Strength | 121,000 psi | 834 MPa |
| Yield Strength | 91,000 psi | 627 MPa |
| Elongation | 20 % |
Typical Welding Parameters
| Process | Diameter | Voltage | Amperage | Gas/Flux |
|---|---|---|---|---|
| TIG (GTAW) | 1/16” (1.6 mm) | 10 – 12 | 80 – 150 | 100% Ar |
| 3/32” (2.4 mm) | 15 – 18 | 150 – 250 | 100% Ar | |
| 1/8” (3.2 mm) | 16 – 20 | 200 – 375 | 100% Ar | |
| MIG (GMAW) | .035” (0.9 mm) | 29 – 34 | 150 – 180 | 98% Ar – 2% O2 |
| .045” (1.1 mm) | 29 – 34 | 180 – 220 | 98% Ar – 2% O2 | |
| Sub Arc (SAW) | .093” (2.4 mm) | 28 – 32 | 300 – 400 | |
| .125” (3.2 mm) | 29 – 33 | 400 – 500 |