: Unlike automatic image analysis (governed by ASTM E1245 ), this method relies on a human operator to systematically count points that fall within the target phase.
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ASTM E562-19 outlines a standardized, manual point-counting procedure to accurately determine the volume fraction of constituents in a solid material's microstructure. The method involves placing a grid over a polished micrograph and counting grid points on specific phases to statistically calculate relative proportions. Read the full standard on the ASTM International website iTeh Standards : Unlike automatic image analysis (governed by ASTM
Widely used to determine the ferrite-to-austenite ratio in duplex stainless steels and to estimate pearlite or inclusion content in various alloys. The method involves placing a grid over a
The accuracy of the ASTM E562-19 method depends on rigorous sample preparation and systematic field selection.