GEN 418 Overview
GEN 418 is a nickel‐copper welding wire used for welding of Monel® 400, 404 and K500. It can also be used in dissimilar joining applications include nickel‐copper 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 – 69.0 64.0 |
1.5 – 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) | 1/16” (1.6 mm) | 14 – 18 | 90 – 130 | 100% Ar |
| 3/32” (2.4 mm) | 15 – 20 | 120 – 170 | 100% Ar | |
| 1/8” (3.2 mm) | 15 – 20 | 150 – 220 | 100% Ar | |
| MIG (GMAW) | .035” (0.9 mm) | 26 – 29 | 150 – 200 | 75% Ar – 25% He |
| .045” (1.1 mm) | 28 – 32 | 180 – 220 | 75% Ar – 25% He | |
| Sub Arc (SAW) | .093” (2.4 mm) | 32 – 35 | 300 – 350 | |
| .125” (3.2 mm) | 32 – 35 | 400 – 550 |