ASTM C559-16(R2020) pdf free download

ASTM C559-16(R2020) pdf free download.Standard Test Method for Bulk Density by Physical Measurements of Manufactured Carbon and Graphite Articles
1. Scope
1.1 This test method covers the determination of the bulk density of manufactured articles of carbon and graphite of at least 500 mm 3 volume. The bulk density is calculated to an accuracy of 0.25 %, using measurements of mass and dimen- sions in air at 25 °C 6 5 °C. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Significance and Use
4.1 Bulk density as determined by this test method is a basic material property of importance in manufacturing and applica- tion of carbon and graphite. 4.2 This test method can be used for quality and process control, material characterization and description, and other purposes.
5. Preparation of Test Specimens
5.1 Machine test specimens from the manufactured article in the form of a rectangular parallelepiped or a right circular cylinder. The minimum mass of the specimen shall be 2000 times the sensitivity ofthe balance used to weigh the specimen, and the volume ofthe specimen shall not be less than 500 mm 3 . The minimum dimension ofthe specimen shall be the larger of: 5.1.1 Ten times the length of the largest visible particle, and 5.1.2 2000 times the resolution of the device used for measuring the dimension. 5.2 During the machining operation, use no lubricant having a boiling point above 100 °C. All corners, edges, and faces of the specimen should be free ofchips or gouges. Ensure that the specimen is free of any residue from the machining operation. Dry the specimen for a minimum of 2 h at 110 °C, and then allow it to cool to 25 °C 6 5 °C in a desiccator. The specimen shall not be removed from the desiccator until immediately prior to weighing.
6. Procedure
6.1 Weigh the specimen to an accuracy of 0.05 % using a balance or scale. During the weighing operation, handle the specimen with soft-tipped tongs. 6.2 Measure each dimension of the test specimen to an accuracy of 0.05 %. 6.2.1 If the specimen is a rectangular parallelepiped, make four measurements of the length (longest dimension). Take each measurement along the center of each of the four long faces ofthe specimen. Measure the width and thickness at each end and at two intermediate points along the length of the specimen. Determine the mean of each dimension. 6.2.2 Ifthe specimen is a right circular cylinder, measure the length at four points, 90° apart on the periphery of the circular end faces. Make two sets of diameter measurements. Each set shall consist of four measurements, one at each end and two at intermediate points along an axial line. These sets shall lie at 90° to each other. Determine the mean length and the mean of each of the two sets of diameter measurements.