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ASTM E930 1999 Edition, April 10, 1999
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Standard Test Methods for Estimating the Largest Grain Observed in a Metallographic Section (ALA Grain Size)
Includes all amendments and changes through Reapproval Notice , 2015
Page Count:6
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These test methods describe simple manual procedures for measuring the size of the largest grain cross-section observed on a metallographically prepared plane section.

These test methods shall only be valid for microstructures containing outlier coarse grains, where their population is too sparse for grain size determination by Test Methods E112.

This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.