GEN 320LR Overview
GEN 320LR has a chemical composition similar to GEN 320 with lower level of carbon, silicon, phosphorus and sulfur. Additionally, niobium (columbium) and manganese content are controlled at narrower ranges. These modifications minimize the occurrence of hot cracking and micro‐fissuring (while maintaining the corrosion resistance) frequently encountered in fully austenitic stainless steel weld metals.
Composición química de AWS (típica)
| %C | %Cr | %Ni | %Mo | %Mn |
|---|---|---|---|---|
|
0.025 max 0.007 |
19.0 – 21.0 20.02 |
32.0 – 36.0 32.82 |
2.0 – 3.0 2.38 |
1.5 ‐ 2.0 1.84 |
| %Si | %P | %S | %Cu | %Nb (Cb) |
|---|---|---|---|---|
|
0.15 max 0.07 |
0.015 max 0.012 |
0.02 max 0.001 |
3.0 – 4.0 3.35 |
8x%C – 0.4 0.23 |
Propiedades mecánicas típicas del metal de soldadura
| Fuerza de Tensión | 86,000 psi | 593 MPa |
| Límite elástico | 57,000 psi | 393 MPa |
| Alargamiento | 34% |
Typical Welding Parameters
| Proceso | Diameter | Voltage | Amperage | Gas/Flux |
|---|---|---|---|---|
| TIG (GTAW) | 1/16” (1.6 mm) | 14 – 17 | 90 – 130 | 100% Ar |
| 3/32” (2.4 mm) | 15 – 20 | 120 – 175 | 100% Ar | |
| MIG (GMAW) | .035” (0.9 mm) | 29 – 33 | 160 – 190 | 98%Ar – 2%O2 |
| .045” (1.1 mm) | 29 – 33 | 180 – 220 | 98%Ar – 2%O2 | |
| Sub Arc (SAW) | .093” (2.4 mm) | 29 – 32 | 300 – 375 | |
| .125” (3.2 mm) | 29 – 32 | 400 – 550 |