Overview of duplex alloys and corrosion resistance
| Grade to EN 100088 (BSI, 2014) | Composition: % | Corrosion resistance (PRE)a | |||
|---|---|---|---|---|---|
| Chromium (Cr) | Nickel (Ni) | Molybdenum (Mo) | Nitrogen (N) | ||
| 1.4162 (2101) | 21 | 1.5 | 0.3 | 0.22 | 26 |
| 1.4462 (2205) | 22 | 5.7 | 3.1 | 0.17 | 35 |
| 1.4404 (316L) | 18 | 10 | 2 | — | 24 |
| Grade to EN 100088 ( | Composition: % | Corrosion resistance (PRE) | |||
|---|---|---|---|---|---|
| Chromium (Cr) | Nickel (Ni) | Molybdenum (Mo) | Nitrogen (N) | ||
| 1.4162 (2101) | 21 | 1.5 | 0.3 | 0.22 | 26 |
| 1.4462 (2205) | 22 | 5.7 | 3.1 | 0.17 | 35 |
| 1.4404 (316L) | 18 | 10 | 2 | — | 24 |
PRE = pitting resistance equivalent = Cr + 3.3Mo + 16N
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