GEN 312 Overview
GEN 312 is used to weld cast alloys of similar chemical composition. It is also used to weld dissimilar metals
and weld overlays. Its weld deposit contains significant percentage of ferrite in an austenite matrix and thereby highly resistance to weld metal cracks and fissures.
Composition chimique AWS (typique)
| %C | %Cr | %Ni | %Mo | %Mn |
|---|---|---|---|---|
|
0.15 max 0,10 |
28.0 – 32.0 30.2 |
8.0 – 10.5 8.9 |
0.75 max 0,17 |
1.0 – 2.5 1.8 |
| %Si | %P | %S | %Cu |
|---|---|---|---|
|
0.30 – 0.65 1,80 |
0.03 max 0,02 |
0.03 max 0,01 |
0.75 max 0,15 |
Propriétés mécaniques typiques du métal soudé
| Résistance à la traction | 105,000 psi | 724 MPa |
| Limite d'élasticité | 75,000 psi | 517 MPa |
| Élongation | 25% |
Typical Welding Parameters
| Processus | 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 | 125 – 200 | 100% Ar | |
| 1/8” (3.2 mm) | 16 – 20 | 200 – 350 | 100% Ar | |
| MIG (GMAW) | .035” (0.9 mm) | 28 – 32 | 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) | 28 – 32 | 250 – 450 | |
| .125” (3.2 mm) | 29 – 33 | 300 – 500 |