ASTM C747 - 93(2010)e1

    Standard Test Method for Moduli of Elasticity and Fundamental Frequencies of Carbon and Graphite Materials by Sonic Resonance

    Active Standard ASTM C747 | Developed by Subcommittee: D02.F0

    Book of Standards Volume: 05.05


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    Significance and Use

    This test method is primarily concerned with the room temperature determination of the dynamic moduli of elasticity and rigidity of slender rods or bars composed of homogeneously distributed carbon or graphite particles.

    This test method can be adapted for other materials that are elastic in their initial stress-strain behavior, as defined in Test Method E111.

    This basic test method can be modified to determine elastic moduli behavior at temperatures from 75°C to +2500°C. Thin graphite rods may be used to project the specimen extremities into ambient temperature conditions to provide resonant frequency detection by the use of transducers as described in 6.1.

    1. Scope

    1.1 This test method covers the measurement of the fundamental transverse, longitudinal, and torsional frequencies of isotropic and anisotropic carbon and graphite materials. These measured resonant frequencies are used to calculate dynamic elastic moduli for any grain orientations.

    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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C215 Test Method for Fundamental Transverse, Longitudinal, and Torsional Resonant Frequencies of Concrete Specimens

    C559 Test Method for Bulk Density by Physical Measurements of Manufactured Carbon and Graphite Articles

    C885 Test Method for Youngs Modulus of Refractory Shapes by Sonic Resonance

    E111 Test Method for Youngs Modulus, Tangent Modulus, and Chord Modulus


    ICS Code

    ICS Number Code 71.060.10 (Chemical elements)

    UNSPSC Code

    UNSPSC Code 11101507(Graphite); 12141908(Carbon C)


    Referencing This Standard

    DOI: 10.1520/C0747-93R10E01

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM C747-93(2010)e1, Standard Test Method for Moduli of Elasticity and Fundamental Frequencies of Carbon and Graphite Materials by Sonic Resonance, ASTM International, West Conshohocken, PA, 2010, www.astm.org

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