Plating, Anodizing & Surface Treatment worked example

Corrosion Resistance Score with corrosion severity of 15 score: a worked example

This scenario runs the corrosion resistance score calculation on the strong side: corrosion severity of 15 score, with every other input held at its documented default. Use it when corrosion resistance in plating, anodizing and surface treatment needs a defensible ranking against other plating, anodizing and surface treatment risks for the next review.

The inputs for this scenario

  • Corrosion severity (impact of a coating failure): 15 score (raised for this scenario; the documented default is 6)
  • Corrosion occurrence (how often the defect appears): 4 score (unchanged)
  • Corrosion detection (odds inspection catches it): 3 score (unchanged)

Working through the calculation

  • Applying the documented formula (Corrosion resistance risk score = corrosion resistance severity score × corrosion resistance occurrence score × corrosion resistance detection score) to the inputs above produces each figure below.
  • At this operating point the engine returns 8.15 score for corrosion resistance risk score, the number this scenario is built around.
  • At this operating point the engine returns 15 score for corrosion resistance severity score.
  • At this operating point the engine returns 4 score for corrosion resistance occurrence score.
  • At this operating point the engine returns 3 score for corrosion resistance detection score.

How this compares with the baseline

  • Against the tool's baseline example, where corrosion severity sits at 6 score and the headline result is 4.55 score, this scenario comes in 79.12% above the baseline at 8.15 score.
  • Use it during coating FMEAs, PPAP reviews, or after field corrosion complaints to prioritize which failure modes to fix first. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Corrosion resistance risk score: 8.15 score (headline result)
  • Corrosion resistance severity score: 15 score
  • Corrosion resistance occurrence score: 4 score
  • Corrosion resistance detection score: 3 score

Run it with your numbers

  • Every input above is editable in the live Corrosion Resistance Score calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.