Rare Earth Magnet & Motor Materials worked example

Coating Yield at 99% target coating yield rate: a worked example

This scenario runs the coating yield calculation on the strong side: 99% target coating yield rate, with every other input held at its documented default. Use it when coating yield in rare earth magnet and motor materials needs a clean rate and gap-to-target you can put on a tier board.

The inputs for this scenario

  • Conforming coated magnets (pass adhesion and thickness): 8 count (unchanged)
  • Total magnets processed through coating line: 250 count (unchanged)
  • Target coating yield rate: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Coating yield rate = coating yield count ÷ total coating yield population × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 3.2 % for coating yield rate, the number this scenario is built around.
  • At this operating point the engine returns 95.8 points for coating yield gap to target.
  • At this operating point the engine returns 8 count for coating yield count.
  • At this operating point the engine returns 250 count for total coating yield population.

How this compares with the baseline

  • Against the tool's baseline example, where target coating yield rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • Use it after each coating batch or as a daily roll-up to watch plating-bath health and pretreatment consistency. 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

  • Coating yield rate: 3.2 % (headline result)
  • Coating yield gap to target: 95.8 points
  • Coating yield count: 8 count
  • Total coating yield population: 250 count

Run it with your numbers

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

Last reviewed 2026-05-12.