ASTM E562-19 remains a valuable standard for manual phase volume fraction estimation. While automatic image analysis has grown in capability, the manual point-count method offers a robust, unbiased, and statistically sound alternative when automation is impractical or unreliable. Its continued inclusion in the ASTM Volume 03.01 (Metallography) reflects its enduring relevance in materials characterization.
If you need to read the full standard, here are legal ways to access it:
ASTM E562-19 is widely used in:
Even with the PDF in hand, users make mistakes. Avoid these:
No, but they are related. ISO 9042 (Steel – Manual point counting method) is similar but not identical. ASTM E562-19 is more general for any metal or ceramic microstructure. astm e56219 pdf
The PDF of ASTM E562-19 includes Table 1 (or similar), which correlates the expected volume fraction to the number of fields needed. For example, if you expect 50% phase, 400 points suffice; if you expect 2% phase, you may need 2,000+ points.
If you are writing a test report or a quality control procedure, use the correct citation format: ASTM E562-19 remains a valuable standard for manual
ASTM E562-19, "Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count," ASTM International, West Conshohocken, PA, 2019, DOI: 10.1520/E0562-19
ASTM offers a 1-page scope preview for free on their website. The full astm e56219 pdf requires purchase. If you need to read the full standard
ASTM E562-19 is the official title for the standard test method titled: "Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count." It was published by ASTM International (formerly known as the American Society for Testing and Materials).
This standard provides a practical procedure for estimating the volume fraction of a specific phase or constituent within a microstructure using a grid of uniformly spaced points. Essentially, it helps you answer the question: "What percentage of this metal’s cross-section is pearlite, ferrite, graphite, or inclusions?"
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