MPIF Standard 44 ✓ Most Recent

This standard describes a method for determining the change in dimensions of a powder metallurgy specimen after sintering. The dimensional change is the difference, typically expressed as a percentage, between a dimension of the sintered specimen and the corresponding die dimension.

NOTE - The general procedure of measuring the dimensions of the compacting die or a PM compact or test piece, before and after a processing step and calculating a percent dimensional change, may be adapted for use as an internal process evaluation test to quantify green expansion, dimensional change from the size of the green part, repressing size change, heat treatment changes, or other changes in dimensions that result from a manufacturing operation.

This is an excerpt from Standard Test Methods for Metal Powders and Powder Metallurgy Products, 2025 Edition, with ISBN 9781943694464.