Description: AFM ER2209 is used primarily to weld duplex stainless steels which contain
approximately 22 percent of chromium such as UNS S31803 (alloy 2205). Deposits
have ˇ°duplexˇ± microstructures consisting of an austenite-ferrite matrix. AFM
ER2209 is char-acterized by high tensile strength, resistance to stress
corrosion cracking, and improved resistance to pitting.
Chemical Composition Requirements for Undiluted Weld Metal: |
(C) |
Carbon |
0.03 |
| (Cr) |
Chromium |
21.5 to 23.5 |
| (Cu) |
Copper |
0.75 |
| (Mn) |
Manganese |
0.50 to 2.0 |
| (Mo) |
Molybtenum |
2.5 to 3.5 |
| (N) |
|
0.08 to 0.20 |
| (Ni) |
Nickel |
7.5 to 9.5 |
(P) |
Phosphorus |
0.03 |
(S) |
Sulfer |
0.03 |
| (Si) |
Silicon |
0.90 |
All values are considered maximum, unless other-wise noted.
|
