Precision Springs, Stampings & Micro-Formed Components worked example

Spring Rate Variation at 99% target spring rate variation rate: a worked example

This scenario runs the spring rate variation calculation on the strong side: 99% target spring rate variation rate, with every other input held at its documented default. Use it when spring rate variation in precision springs, stampings and micro-formed components needs a clean rate and gap-to-target you can put on a tier board.

The inputs for this scenario

  • Spring rate variation count: 8 count (unchanged)
  • Total spring rate variation population: 250 count (unchanged)
  • Target spring rate variation rate: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

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

How this compares with the baseline

  • Against the tool's baseline example, where target spring rate variation rate sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • Use it when summarizing a lot inspection, monitoring rate stability across a production run, or reporting conformance against a customer or internal target. 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

  • Spring rate variation rate: 3.2 % (headline result)
  • Spring rate variation gap to target: 95.8 points
  • Spring rate variation count: 8 count
  • Total spring rate variation population: 250 count

Run it with your numbers

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

Last reviewed 2026-05-12.