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ASTM E 112 Standard Test Methods for Determining Average Grain Size

Contact Information

 Susan Saliba

 Division Head



300 College Park

Dayton, OH 45469-0172


937-229-2877 (division)

937-229-3433 (fax)


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Metallography Lab

Average grain size measurements are routinely performed at UDRI. While all of the procedures outlined in ASTM E112 are utilized, the intercept method is the preferred procedure. These test methods are applied to metallic and non-metallic materials with similar, single-phase structures of unimodal distribution. Two-dimensional grain sections revealed by sectional planning are used to determine planar grain size.

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