Powder Metallurgy & Sintered Parts worked example

Density Variation with nominal green density of 50 units: a worked example in powder metallurgy & sintered parts

Here is what the math looks like when conditions slip. We hold every other input steady and drop nominal green density to 50 units, then walk the calculation through step by step. Density variation quantifies how much local density differs across a pressed and sintered powder metal part, which directly drives strength, dimensional change, and where the part is likely to crack.

The inputs for this scenario

  • Nominal green density: 50 units (the input this scenario stresses; the baseline uses 100)
  • Measured density spread across the part: 4 units (held at the documented default)
  • Density-to-property conversion factor: 0.01 x (held at the documented default)
  • Process correction multiplier: 1 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Density Variation = first factor × second factor × conversion factor × process multiplier.
  • Result works out to 1 units at these inputs, and this is the headline figure for the scenario.
  • Base product works out to 1 value at these inputs.
  • Multiplier works out to 1 x at these inputs.
  • Factor A x B works out to 200 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where nominal green density sits at 100 units and the headline result is 2 units, this scenario comes in 50% below the baseline at 1 units.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to nominal green density, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It is a scaling index, not a validated strength model, so use it to rank setups relatively rather than to predict absolute part strength or crack thresholds.

Results at a glance

  • Result: 1 units (headline result)
  • Base product: 1 value
  • Multiplier: 1 x
  • Factor A x B: 200 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Density Variation calculator, set nominal green density to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.