Bearings, Gears & Power Transmission worked example

Heat Treat Distortion Scrap Cost with scrapped heat-treated components of 21 parts: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop scrapped heat-treated components to 21 parts, then walk the calculation through step by step. Estimate cost exposure from gears, shafts, or bearing components scrapped after heat-treat distortion or hardness nonconformance.

The inputs for this scenario

  • Scrapped heat-treated components: 21 parts (the input this scenario stresses; the baseline uses 42)
  • Cost per scrapped component: 185 $ / part (held at the documented default)
  • Fixed heat-treat batch cost: 2,400 $ (held at the documented default)
  • Containment and rework overhead: 950 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Scrapped component value = scrapped components × cost per scrapped component.
  • Total heat-treat distortion scrap cost works out to 7,235 $ at these inputs, and this is the headline figure for the scenario.
  • Scrap cost per rejected component works out to 345 $ / rejected part at these inputs.
  • Scrapped component value works out to 3,885 $ at these inputs.
  • Batch and containment adders works out to 3,350 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where scrapped heat-treated components sits at 42 parts and the headline result is 11,120 $, this scenario comes in 34.94% below the baseline at 7,235 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to scrapped heat-treated components, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats the batch and containment costs as known fixed inputs; it does not model downstream effects like late shipments, expedite freight, or lost capacity from re-running the batch.

Results at a glance

  • Total heat-treat distortion scrap cost: 7,235 $ (headline result)
  • Scrap cost per rejected component: 345 $ / rejected part
  • Scrapped component value: 3,885 $
  • Batch and containment adders: 3,350 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Heat Treat Distortion Scrap Cost calculator, set scrapped heat-treated components to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.