GEN 418 Overview
GEN 418 is a nickelโcopper welding wire used for welding of Monelยฎ 400, 404 and K500. It can also be used in dissimilar joining applications include nickelโcopper alloys, carbon as well as low alloy steel to Nickel 200. GEN 418 is commonly used in marine applications due to its excellent corrosion resistance against seawater.
AWS Chemical Composition (Typical)
| %C | %Mn | %Ni | %Ti | %Fe | %Al |
|---|---|---|---|---|---|
| 0.15 max 0.056 |
4.0 max 3.40 |
62.0 โ 69.0 64.0 |
1.5 โ 3.0 2.1 |
2.5 max 0.23 |
1.25 max 0.19 |
| %Si | %P | %S | %Cu | Total Others |
|---|---|---|---|---|
| 1.25 max 0.40 |
0.02 max 0.002 |
0.015 max 0.001 |
Rem. 29.4 |
0.50 max |
Typical Weld Metal Mechanical Properties
| Tensile Strength | 76,000 psi | 524 MPa |
| Yield Strength | 50,000 psi | 345 MPa |
| Elongation | 34% |
Typical Welding Parameters
| Process | Diameter | Voltage | Amperage | Gas/Flux |
|---|---|---|---|---|
| TIG (GTAW) | 1/16โ (1.6 mm) | 14 โ 18 | 90 โ 130 | 100% Ar |
| 3/32โ (2.4 mm) | 15 โ 20 | 120 โ 170 | 100% Ar | |
| 1/8โ (3.2 mm) | 15 โ 20 | 150 โ 220 | 100% Ar | |
| MIG (GMAW) | .035โ (0.9 mm) | 26 โ 29 | 150 โ 200 | 75% Ar โ 25% He |
| .045โ (1.1 mm) | 28 โ 32 | 180 โ 220 | 75% Ar โ 25% He | |
| Sub Arc (SAW) | .093โ (2.4 mm) | 32 โ 35 | 300 โ 350 | |
| .125โ (3.2 mm) | 32 โ 35 | 400 โ 550 |