Description: AFM ER630 is designed primarily for welding ASTM A564 Type 630 (alloy 17-4PH)
and some other precipitation-hardening stainless steels. The composition is
modified to prevent the formation of ferrite networks in the martensitic
microstructure which have a deleterious effect on mechanical properties.
Dependent on the application and weld size, the weld metal may be used either
as-welded, welded and precipitation hardened, or welded, solution treated, and
precipitation hardened.
Chemical Composition Requirements for Undiluted Weld Metal: |
(C) |
Carbon |
0.05 |
| (Cb + Nb) |
Columbium & Niobium |
0.15 to 0.30 plus Ta |
| (Cr) |
Chromium |
16.0 to 16.75 |
| (Cu) |
Copper |
3.25 to 4.00 |
| (Mn) |
Manganese |
0.25 to 0.75 |
| (Mo) |
Molybtenum |
0.75 |
| (Ni) |
Nickel |
4.5 to 5.0 |
(P) |
Phosphorus |
0.03 |
(S) |
Sulfer |
0.03 |
| (Si) |
Silicon |
0.75 |
All values are considered maximum, unless other-wise noted.
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