For most industrial applications, a relative accuracy of 10% or less is desirable.
The "19e1" suffix indicates the standard was originally approved or revised in 2019, with "e1" denoting a minor editorial change that did not affect the technical content of the document. 1. Why Is This Standard Necessary?
The sample standard deviation of the point fraction per field is calculated using: astm e562-19e1
: Quantifying secondary reinforcing phases like gamma-prime ( γ′gamma prime ) to ensure high-temperature creep resistance. Reporting Requirements
I can provide more specialized information regarding this standard. If you want, tell me: For most industrial applications, a relative accuracy of
Published by ASTM International, this standard provides a rigorous, repeatable procedure for estimating the volume fraction of a constituent phase or feature within a two-dimensional polished section. This article dissects the standard in detail, covering its scope, history (including the meaning of the -19e1 suffix), theoretical basis, required apparatus, step-by-step procedure, calculations, and practical applications.
Metallographic specimens are ground, polished, and often etched to reveal the different phases under a microscope. Why Is This Standard Necessary
Understanding ASTM E562-19e1: The Standard for Measuring Volume Fraction by Systematic Manual Point Count
The operator evaluates each intersection point on the grid according to strict scoring parameters: