ASTM D2638

Real Density of Calcined Petroleum Coke by Helium Pycnometer

Applicability: ASTM D2638 is a standard test method used to determine the real density of calcined petroleum coke by using a helium pycnometer. The test is applicable to samples that have been processed to be smaller than a specific size (75 μm) to ensure that the test can accurately measure the volume of the material itself, excluding voids.

Purpose: The purpose of ASTM D2638 is to provide a standard test method for determining the real density of calcined petroleum coke using a helium pycnometer. This standard is important because real density is a major quality specification that directly affects the physical and chemical properties of the finished carbon and graphite products made from the coke.