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These test methods cover procedures for estimating and rules for expressing the average grain size of all metals consisting entirely, or principally, of a single phase. The number of grains per unit area, NA, is used to determine the ASTM grain size number, G. These test methods cover the measurement of average grain size and include the comparison procedure, the planimetric (or Jeffries) procedure, and the intercept procedures. These test methods are used to determine the average grain size of specimens with a unimodal. 1 These test methods are under the jurisdiction of ASTM Committee E04 on. Metallography and are the direct responsibility of Subcommittee E on Grain. Size. Current edition approved Nov. 15, Published January Originally approved in Last previous edition approved as E– DOI.
ASTM E methods for grain counting using microscope reticle. Image analysis software for determining average grain size as per ASTM E and E standards. ASTM E standard is commonly practiced within the United States for determining the quality of a specific alloy. This standard is routinely performed by inspecting a polished sample underneath a metallurgical microscope (generally an inverted model such as the GX41/GX51 or. GX71) and determining grains distribution.
Using ASTM E as our accredited test specification, and an optical microscope , we can determine the average grain size in various metallic materials. Request a free quote today!. 9 Jul ASTM E Standard Test Methods for Determining Average Grain Size! ISO Copper and Copper Alloys - Estimation of Average Grain Size, Second Edition. Descriptions! Estimating Grain Size visually shall be used as the primary method of determining grain size for metallic strip. 10 Jan Purchase your copy of ASTM E - 13 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available online in electronic and print formats.