ASTM E112: Standard Test Methods for Determining Average Grain Size
ISO 643: Steels - Micrographic determination of the apparent grain size
ASTM E112 covers three test methods to determine the average grain size: The comparison procedure, the planimetric procedure, and the intercept procedure. These test methods may also be applied to nonmetallic materials. The test method is used for unimodal distributions. Duplex grain size distributions are tested according to ASTM E1181. EndoLab® is equipped with up to date image analysis software to provide reliable and reproducible analysis of your alloy.