Powder Metallurgy & Sintered Parts worked example

Shrinkage Allowance with green dimension of 310 units: a worked example in powder metallurgy & sintered parts

Push green dimension up to 310 units and the picture changes. This example computes every intermediate figure at that operating point. Use it when shrinkage allowance in powder metallurgy and sintered parts needs a clean margin number for a powder metallurgy and sintered parts go / no-go review.

The inputs for this scenario

  • Green (as-pressed) dimension: 310 units (raised for this scenario; the documented default is 125)
  • Sintered (final) target dimension: 100 units (unchanged)
  • Reference dimension for percentage: 100 units (unchanged)

Working through the calculation

  • Applying the documented formula (Shrinkage Allowance margin = available value - required value) to the inputs above produces each figure below.
  • At this operating point the engine returns 210 % for margin, the number this scenario is built around.
  • At this operating point the engine returns 210 value for absolute margin.
  • At this operating point the engine returns 310 value for available amount.
  • At this operating point the engine returns 100 value for required amount.

How this compares with the baseline

  • Against the tool's baseline example, where green dimension sits at 125 units and the headline result is 25 %, this scenario comes in 740% above the baseline at 210 %.
  • It computes the absolute dimensional allowance between a green and a sintered dimension, and expresses that allowance as a percentage of a chosen reference dimension. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Margin: 210 % (headline result)
  • Absolute margin: 210 value
  • Available amount: 310 value
  • Required amount: 100 value

Run it with your numbers

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

Last reviewed 2026-05-12.