Astm E562-19e1 !!better!! May 2026

ASTM E562-19e1 is a widely accepted, foundational manual test method for determining the volume fraction of microstructural phases by superimposing a grid over a micrograph. Considered an economical and relatively simple technique, it is ideal for smaller labs, though it is highly operator-dependent, slow, and can have errors exceeding 10%. For a detailed overview, visit Infinita Lab .

Note: ASTM E562 is the preferred standard when automatic image analysis is not available or when the contrast is too poor for thresholding. astm e562-19e1

ASTM E562-19e1 is the industry-standard test method for determining the volume fraction ASTM E562-19e1 is a widely accepted, foundational manual

Counting:

In each field, the operator counts the number of grid points that lie entirely within the phase or structure of interest. Ambiguities are addressed by a simple rule: points falling exactly on a phase boundary are counted as one-half . Note: ASTM E562 is the preferred standard when

: For 3D-printed parts, the standard helps identify unwanted phases or oxides that could lead to premature failure under load. Summary of ASTM E562-19e1 Description

The primary purpose of ASTM E562-19e1 is to define a standard procedure for estimating the volume fraction of a specific phase or structural constituent within a two-dimensional polished cross-section of a material. It is a manual method, relying on a human operator using an optical or electron microscope, though its principles are also adapted for automated systems. The standard explicitly covers a wide range of materials, including metals, ceramics, cermets, and composites, provided that the individual phases can be resolved and distinguished under magnification via contrast differences (e.g., color, gray level, or etching response). Critically, E562 supersedes and replaces the previous E562-11 standard, with the "e1" designation indicating a minor editorial correction, reinforcing its continued relevance.