| Half-cell potential (mV) | Corrosion status |
| Ecorr > −200 mV | Passive corrosion status/non-corrosive (90% probability) |
| −200 mV > Ecorr > −350 mV | Unstable corrosion status |
| Ecorr < −350 mV | Active corrosion status/corrosive (90% probability) |