GEN 208 Overview
GEN 208 is used for TIG, MIG, and SAW welding of nickel 200 or 201. This filler metal is also employed for overlaying on steel as well as repairing cast iron castings. It can also be used for dissimilar joints between nickel or nickel alloys to stainless or ferritic steels. Additionally, GEN 208 is used for surfacing of steel.
AWS 化学成分（典型）
| %C | %Mn | %Ni | %Cu | %Fe | %Al |
|---|---|---|---|---|---|
|
0.15 max. 0.04 |
1.0 max. 0.38 |
93.0 min. 95.50 |
0.25 max. 0.015 |
1.0 max. 0.18 |
1.50 max. 0.10 |
| %Si | %P | %S | %Ti | 其他合计 |
|---|---|---|---|---|
|
0.75 max. 0.57 |
0.03 max. 0.003 |
0.015 max. 0.003 |
2.0 – 3.5 2.95 |
0.50 max. |
典型的焊接金属机械性能
| 抗拉强度 | 65,000 psi | 448 MPa |
| 屈服强度 | 36,000 psi | 248 MPa |
| 伸长 | 28% |
Typical Welding Parameters
| 过程 | Diameter | Voltage | Amperage | Gas/Flux |
|---|---|---|---|---|
| 氩弧焊 (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 | |
| 米格 (GMAW) | .035” (0.9 mm) | 26 – 30 | 150 – 200 | 75% Ar – 25% He |
| .045” (1.1 mm) | 28 – 32 | 170 – 220 | 75% Ar – 25% He | |
| Sub Arc (SAW) | .093” (2.4 mm) | 28 – 31 | 275 – 350 | |
| .125” (3.2 mm) | 29 – 32 | 350 – 450 |