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ASTM C714-05e1

Historical Revision

Standard Test Method for Thermal Diffusivity of Carbon and Graphite by Thermal Pulse Method

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1.1 This test method covers the determination of the thermal diffusivity of carbons and graphite to 5 % at temperatures up to 500C. It requires only a small easily fabricated specimen. Thermal diffusivity values in the range from 0.04 to 2.0 cm2/s are readily measurable by this test method; however, for the reason outlined in Section 5, for materials outside this range this test method may require modification.

1.2 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.


3.1 Thermal diffusivity is an important property required for such purposes as design applications under transient heat flow conditions, determination of safe operating temperature, process control, and quality assurance.

3.2 The flash method is used to measure values of thermal diffusivity (α) of a wide range of solid materials. It is particularly advantageous because of the simple specimen geometry, small specimen size requirements, rapidity of measurement, and ease of handling materials having a wide range of thermal diffusivity values over a large temperature range with a single apparatus. The short measurement times involved reduce the chances of contamination and change of specimen properties due to exposure to high temperature environments.

3.3 Thermal diffusivity results in many cases can be combined with values for specific heat (Cp) and density (ρ) and used to derive thermal conductivity (λ) from the relation λ = αCpρ.

This test method can be used to characterize graphite for design purposes.

SDO ASTM: ASTM International
Document Number C714
Publication Date Nov. 1, 2005
Language en - English
Page Count 4
Revision Level 05e1
Supercedes
Committee D02.F0
Publish Date Document Id Type View
Oct. 1, 2023 C0714-23 Revision
May 1, 2017 C0714-17 Revision
Nov. 1, 2005 C0714-05E01 Revision
Nov. 1, 2005 C0714-05 Revision
Oct. 1, 2015 C0714-05R15 Reaffirmation
May 1, 2010 C0714-05R10 Reaffirmation
April 10, 2000 C0714-85R00 Reaffirmation