ASTM E930-99
Historical Standard: ASTM E930-99 Standard Test Methods for Estimating the Largest Grain Observed in a Metallographic Section (ALA Grain Size)
SUPERSEDED (see Active link, below)
ASTM E930
1. Scope
1.1 These test methods describe simple manual procedures for estimating the size of the largest grain observed on a metallographically prepared plane section.
1.2 These test methods shall only be valid for microstructures containing outlier course grains, where their population is too sparse for grain size determination by Test Methods E112.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E3 Guide for Preparation of Metallographic Specimens
E7 Terminology Relating to Metallography
E112 Test Methods for Determining Average Grain Size
E407 Practice for Microetching Metals and Alloys
E1181 Test Methods for Characterizing Duplex Grain Sizes
Keywords
ALA grain; caliper diameter; comparison procedure; ellipse measurement; grain size; largest grain; measuring procedure; metallography; microstructure; outlier grain; point-count procedure;
ICS Code
ICS Number Code 19.120 (Particle size analysis. Sieving)
DOI: 10.1520/E0930-99
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