Astm E56219 Pdf ((full)) May 2026

: A point landing completely within the phase of interest counts as 1 .

The standard is the internationally recognized test method for Determining Volume Fraction by Systematic Manual Point Count . Grounded in the principles of stereology, it provides a statistical approach for estimating the volume of a specific phase or constituent within a solid material’s two-dimensional microstructural image. Core Purpose and Scope astm e56219 pdf

: Samples must be sectioned and polished according to ASTM E3 to ensure a true two-dimensional representation. : A point landing completely within the phase

The standard provides specific calculations to ensure the reliability of the results: Average Volume Fraction ( Ppcap P sub p 500 to 1

: Typically, 500 to 1,000 total grid points are evaluated to reach acceptable confidence levels. Statistical Formulas