Description: AFM ER320 is primarily used to weld base metals of similar composition, such as
alloy 20, for applications where resistance to severe corrosion is required for
a wide range of chemicals including sulfuric and sulfurous acids and their
salts. They can be used to weld both castings and wrought alloys of similar
composition without postweld heat treatment.
Chemical Composition Requirements for Undiluted Weld Metal: |
(C) |
Carbon |
0.07 |
| (Cb + Nb)) |
Columbium & Niobium |
8XC, min plus Ta to 1.0 max |
| (Cr) |
Chromium |
19.0 to 21.0 |
| (Cu) |
Copper |
3.0 to 4.0 |
| (Mn) |
Manganese |
2.50 |
| (Mo) |
Molybtenum |
2.0 to 3.0 |
| (Ni) |
Nickel |
32.0 to 36.0 |
(P) |
Phosphorus |
0.03 |
(S) |
Sulfer |
0.03 |
| (Si) |
Silicon |
0.60 |
All values are considered maximum, unless other-wise noted.
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