GEN 630 Overview
GEN 630 is designed primarily for welding ASTM A564 Type 630 (17‐4PH) and other similar precipitation‐hardening stainless steel. The chemical composition is modified to minimize the presence of ferrite networks in the martensitic microstructure which has a significant effect on mechanical properties. Mechanical properties of this alloy are greatly influenced by the heat treatment.
AWS 化学成分（典型）
| %C | %Cr | %Ni | %Mo | %Mn |
|---|---|---|---|---|
|
0.05 max
0.02 |
16.0 – 16.75
15.6 |
4.5 – 5.0
4.6 |
0.75 max
0.13 |
0.25 – 0.75
0.70 |
| %Si | %P | %S | %Cu | 铌+钽 |
|---|---|---|---|---|
0.75 max 0.42 |
0.03 max 0.02 |
0.03 max 0.02 |
3.25 – 4.00 3.30 |
0.15 – 0.30 0.25 |
典型的焊接金属机械性能
| 抗拉强度 | 150,000 psi | 1034 MPa |
| 屈服强度 | 135,000 psi | 930 MPa |
| 伸长 | 10 % |
Typical Welding Parameters
| 过程 | Diameter | Voltage | Amperage | Gas/Flux |
|---|---|---|---|---|
| 氩弧焊 (GTAW) | 1/16” (1.6 mm) | 14 – 16 | 90 – 140 | 100% Ar |
| 3/32” (2.4 mm) | 15 – 20 | 120 – 175 | 100% Ar | |
| 1/8” (3.2 mm) | 16 – 20 | 180 – 300 | 100% Ar | |
| 米格 (GMAW) | .035” (0.9 mm) | 23 – 29 | 170 – 300 | 98%Ar – 2%O2 |
| .045” (1.1 mm) | 24 – 30 | 190 – 360 | 98%Ar – 2%O2 | |
| Sub Arc (SAW) | .093” (2.4 mm) | 28 – 32 | 250 – 450 | |
| .125” (3.2 mm) | 29 – 34 | 300 – 500 |