GEN 99 Overview
GEN 99 is used for GMAW and GTAW welding of cast iron. While the wire is primarily used to repair gray iron castings, it is also used for overlay and buildup. A preheat and interpass temperature of 350oF (175oC) minimum is recommended during welding.
AWS Chemical Composition (Typical)
| %C | %Mn | %Ni | %Cu |
|---|---|---|---|
|
1.0 max
0.004
|
2.5 max
0.01
|
90 min
99.5
|
4.0 max
0.01
|
| %Si | %Fe | %S | Total |
|---|---|---|---|
|
0.75 max
0.11
|
4.0 max
0.15
|
0.03 max
0.001
|
1.0 max
<0.20
|
Typical Weld Metal Mechanical Properties
| Tensile Strength | 67,500 psi | 465 MPa |
| Yield Strength | 35,000 psi | 241 MPa |
| Elongation | 40 % |
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 – 175 | 100% Ar | |
| 1/8” (3.2 mm) | 15 – 20 | 150 – 220 | 100% Ar | |
| MIG (GMAW) | .035” (0.9 mm) | 29 – 33 | 160 – 180 | 75% Ar – 25% He |
| .045” (1.1 mm) | 29 – 33 | 180 – 220 | 75% Ar – 25% He | |
| .062” (1.6 mm) | 29 – 33 | 200 – 250 | 75% Ar – 25% He |