Plating, Anodizing & Surface Treatment worked example

Corrosion Resistance Score with corrosion severity of 3 score: a worked example

Suppose corrosion severity falls to 3 score. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate corrosion resistance for plating, anodizing and surface treatment using production-ready inputs so teams can rank risks and decide which issue needs containment, controls, or escalation first.

The inputs for this scenario

  • Corrosion severity (impact of a coating failure): 3 score (the input this scenario stresses; the baseline uses 6)
  • Corrosion occurrence (how often the defect appears): 4 score (held at the documented default)
  • Corrosion detection (odds inspection catches it): 3 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Corrosion resistance risk score = corrosion resistance severity score × corrosion resistance occurrence score × corrosion resistance detection score.
  • Corrosion resistance risk score works out to 3.35 score at these inputs, and this is the headline figure for the scenario.
  • Corrosion resistance severity score works out to 3 score at these inputs.
  • Corrosion resistance occurrence score works out to 4 score at these inputs.
  • Corrosion resistance detection score works out to 3 score at these inputs.

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 26.37% below the baseline at 3.35 score.
  • It computes an RPN-style risk score by multiplying the severity, occurrence, and detection ratings for a specific corrosion failure mode. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Corrosion resistance risk score: 3.35 score (headline result)
  • Corrosion resistance severity score: 3 score
  • Corrosion resistance occurrence score: 4 score
  • Corrosion resistance detection score: 3 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Corrosion Resistance Score calculator, set corrosion severity to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.