PREN – pitting resistance
Formulas
PREN = Cr + 3.3 · (Mo + 0.5 · W) + 16 · N
Calculation rules
- Cr content is required. Mo, W and N left empty are taken as 0% (with a notice).
- Contributions: Cr, 3.3 · Mo, 1.65 · W, 16 · N.
- Rounding: PREN – 1 decimal place, contributions – 2 decimal places.
Results are for guidance only, with no guarantee of correctness – check them against the current edition of the standard. They do not replace a WPS or the decision of the welding coordinator. Full description in the methodology