Sheet Metal Stamping & Press Lines worked example

Part Cost Per Stroke at 58% good-part yield factor: a worked example

Suppose good-part yield factor falls to 58%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Part Cost Per Stroke rolls the variable cost of running a press, the yield you actually get, and the fixed die setup and amortization into a single defensible per-piece number.

The inputs for this scenario

  • Parts produced across the run: 100 units (held at the documented default)
  • Fully-burdened cost per part: 45 $ / unit (held at the documented default)
  • Good-part yield factor: 58 % (the input this scenario stresses; the baseline uses 80)
  • Die setup and amortization cost: 250 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Part Cost Per Stroke cost = quantity × rate × capture factor + fixed cost.
  • Weighted cost works out to 2,860 $ at these inputs, and this is the headline figure for the scenario.
  • Per piece value works out to 28.6 $ / piece at these inputs.
  • Captured value works out to 2,610 $ at these inputs.
  • Fixed adjustment works out to 250 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where good-part yield factor sits at 80% and the headline result is 3,850 $, this scenario comes in 25.71% below the baseline at 2,860 $.
  • It computes the yield-weighted total cost of a stamping run plus fixed setup, and divides by quantity to give cost per part. 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

  • Weighted cost: 2,860 $ (headline result)
  • Per piece value: 28.6 $ / piece
  • Captured value: 2,610 $
  • Fixed adjustment: 250 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Part Cost Per Stroke calculator, set good-part yield factor to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.