Active Standard ASTM E768 Developed by Subcommittee: E04.01
Book of Standards Volume: 03.01
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Significance and Use
4.1 Inclusion ratings done either manually using Test Methods or automatically using Practice or are influenced by the quality of specimen preparation. This guide provides examples of proven specimen preparation methods that retain inclusions in polished steel specimens.
4.2 This guide provides a procedure to determine if the prepared specimens are of suitable quality for subsequent rating of inclusions. None of these methods should be construed as defining or establishing specific procedures or limits of acceptability for any steel grade.