Standard Active Last Updated: Sep 03, 2025 Track Document
ASTM D5930-25

Standard Test Method for Thermal Conductivity of Plastics by Transient Line-Source Technique

Standard Test Method for Thermal Conductivity of Plastics by Transient Line-Source Technique D5930-25 ASTM|D5930-25|en-US Standard Test Method for Thermal Conductivity of Plastics by Transient Line-Source Technique Standard new BOS Vol. 08.03 Committee D20
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Significance and Use

5.1 The relative simplicity of the test method makes it applicable for a wide range of materials (4, 5). The technique is capable of fast measurements, making it possible to take data before the materials suffer thermal degradation. Alternatively, it is possible to study the effect of compositional changes such as chemical reaction or aging (6). Short measurement times permit generation of large amounts of data with little effort. The line-source probe and the accompanying test specimen are small in size, making it possible to subject the sample to a wide range of test conditions. Because this test method does not contain a numerical precision and bias statement, it shall not be used as a referee test method in case of dispute.

Scope

1.1 This test method describes the determination of the thermal conductivity in the range from 0.08 W/m K to 2.0 W/m K of filled and unfilled thermoplastics, thermosets, and rubbers over a temperature range from –40 °C to 400 °C.

1.2 The SI units are the 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, 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.

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Details
Book of Standards Volume: 08.03
Developed by Subcommittee: D20.30
Pages: 5
DOI: 10.1520/D5930-25
ICS Code: 83.080.20