1.1 This test method covers the testing of carbon and graphite in tension to obtain the tensile stress-strain behavior, to failure, from which the ultimate strength, the strain to failure, and the elastic moduli may be calculated as may be required for engineering applications. Table 2 lists suggested sizes of specimens that can be used in the tests. NOTE 1—The results of about 400 tests, on file at ASTM as a research report, show the ranges of materials that have been tested, the ranges of specimen configurations, and the agreement between the testers. See Section 11. NOTE 2—For safety considerations, it is recommended that the chains be surrounded by suitable members so that at failure all parts of the load train behave predictably and do not constitute a hazard for the operator.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Conversions are not provided in the tables and figures.
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 appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM C749-15(2020) Referenced Document
ASTM C565 Standard Test Methods for Tension Testing of Carbon and Graphite Mechanical Materials
ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM E4 Standard Practices for Force Verification of Testing Machines
ASTM E6 Standard Terminology Relating to Methods of Mechanical Testing
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM C749-15(2020) history
2020ASTM C749-15(2020) Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
2015ASTM C749-15 Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
2013ASTM C749-13 Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
2008ASTM C749-08(2010)e1 Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
2008ASTM C749-08 Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
1992ASTM C749-92(2002) Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
1992ASTM C749-92(1996) Standard Test Method for Tensile Stress-Strain of Carbon and Graphite