Let’s break it down. ASTM E562-19 is the standard test method for determining volume fraction by systematic manual point count. It is published by ASTM International (formerly known as the American Society for Testing and Materials).
The core idea is simple yet powerful: You superimpose a grid of points over a polished and etched sample’s microstructure (viewed through a microscope). By counting how many points fall on the phase of interest versus the total grid points, you can accurately estimate the of that phase. astm e562-19 pdf
Always buy directly from ASTM International to ensure you have the correct, up-to-date, and fully searchable PDF. Let’s break it down