GEN 347 Overview
GEN 347 is generally used for welding CrâNi stainless steel base metals of similar chemical composition stabilized with either Ti or Nb (Cb). The presence of Nb (Cb) minimizes the possibility of intergranular carbide precipitation and thus susceptibility to intergranular corrosion.
ComposiciĂłn quĂmica de AWS (tĂpica)
| %C | %Cr | %Ni | %Mo | %Mn |
|---|---|---|---|---|
| 0.08 max 0.05 |
19.0 â 21.5 19.5 |
9.0 â 11.0 9.1 |
0.75 max 0.21 |
1.0 â 2.5 1.7 |
| %Si | %P | %S | %Cu | %Nb+Ta |
|---|---|---|---|---|
| 0.30 â 0.65 0.46 |
0.03 max 0.02 |
0.03 max 0.01 |
0.75 max 0.11 |
10xC â 1.0 0.6 |
Propiedades mecĂĄnicas tĂpicas del metal de soldadura
| Fuerza de TensiĂłn: | 88,000 psi | 607 MPa |
| LĂmite elĂĄstico: | 58,000 psi | 400 MPa |
| Elongation (min.): | 40% |
Typical Welding Parameters
| Proceso | Diameter | Voltage | Amperage | Gas/Flux |
|---|---|---|---|---|
| TIG (GTAW) | 1/16â (1.6 mm) | 14 â 17 | 90 â 130 | 100% Ar |
| 3/32â (2.4 mm) | 15 â 20 | 120 â 175 | 100% Ar | |
| MIG (GMAW) | .035â (0.9 mm) | 28 â 32 | 160 â 190 | 98%Ar â 2%O2 |
| .045â (1.1 mm) | 29 â 33 | 180 â 220 | 98%Ar â 2%O2 | |
| Sub Arc (SAW) | .093â (2.4 mm) | 28 â 32 | 250 â 450 | |
| .125â (3.2 mm) | 29 â 34 | 300 â 500 |