ASTM D6744-23
(Test Method)Standard Test Method for Determination of the Thermal Conductivity of Anode Carbons by the Guarded Heat Flow Meter Technique
Standard Test Method for Determination of the Thermal Conductivity of Anode Carbons by the Guarded Heat Flow Meter Technique
SIGNIFICANCE AND USE
5.1 This test method is designed to measure and compare thermal properties of materials under controlled conditions and their ability to maintain required thermal conductance levels.
SCOPE
1.1 This test method covers a steady-state technique for the determination of the thermal conductivity of carbon materials in thicknesses of less than 25 mm. The test method is useful for homogeneous materials having a thermal conductivity in the approximate range 1−4 m2 ·K/W) over the approximate temperature range from 150 K to 600 K. It can be used outside these ranges with reduced accuracy for thicker specimens and for thermal conductivity values up to 60 W/(m·K).
Note 1: It is not recommended to test graphite cathode materials using this test method. Graphites usually have a very low thermal resistance, and the interfaces between the specimen to be tested and the instrument become more significant than the specimen itself.
1.2 This test method is similar in concept to Test Methods E1530 and C518. Significant attention has been paid to ensure that the thermal resistance of contacting surfaces is minimized and reproducible.
1.3 The values stated in SI units are regarded as standard.
1.3.1 Exception—The values given in parentheses are for information only.
1.4 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.
1.5 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.
General Information
Relations
Buy Standard
Standards Content (Sample)
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.
Designation: D6744 − 23
Standard Test Method for
Determination of the Thermal Conductivity of Anode
1
Carbons by the Guarded Heat Flow Meter Technique
This standard is issued under the fixed designation D6744; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers a steady-state technique for the
C518 Test Method for Steady-State Thermal Transmission
determination of the thermal conductivity of carbon materials
Properties by Means of the Heat Flow Meter Apparatus
in thicknesses of less than 25 mm. The test method is useful for
D4175 Terminology Relating to Petroleum Products, Liquid
homogeneous materials having a thermal conductivity in the
Fuels, and Lubricants
approximate range 1< λ < 30 W/(m·K), (thermal resistance in
E1530 Test Method for Evaluating the Resistance to Ther-
−4 2
the range from 10 to 400 × 10 m ·K/W) over the approxi-
mal Transmission by the Guarded Heat Flow Meter
mate temperature range from 150 K to 600 K. It can be used
Technique
outside these ranges with reduced accuracy for thicker speci-
mens and for thermal conductivity values up to 60 W ⁄(m·K).
3. Terminology
3.1 Definitions:
NOTE 1—It is not recommended to test graphite cathode materials using
this test method. Graphites usually have a very low thermal resistance, and
3.1.1 For definitions of terms used in this test method, refer
the interfaces between the specimen to be tested and the instrument
to Terminology D4175.
become more significant than the specimen itself.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 average temperature, n—the average temperature of a
1.2 This test method is similar in concept to Test Methods
surface is the area-weighted mean temperature of that surface.
E1530 and C518. Significant attention has been paid to ensure
that the thermal resistance of contacting surfaces is minimized
3.2.2 heat flux transducer, HFT, n—a device that produces
and reproducible.
an electrical output that is a function of the heat flux, in a
predefined and reproducible manner.
1.3 The values stated in SI units are regarded as standard.
3.2.3 thermal conductance, C, n—the time rate of heat flux
1.3.1 Exception—The values given in parentheses are for
through a unit area of a body induced by unit temperature
information only.
difference between the body surfaces.
1.4 This standard does not purport to address all of the
3.2.4 thermal conductivity, λ, of a solid material, n—the
safety concerns, if any, associated with its use. It is the
time rate of heat flow, under steady conditions, through unit
responsibility of the user of this standard to establish appro-
area, per unit temperature gradient in the direction perpendicu-
priate safety, health, and environmental practices and deter-
lar to the area.
mine the applicability of regulatory limitations prior to use.
3.2.5 thermal resistance, R, n—the reciprocal of thermal
1.5 This international standard was developed in accor-
conductance.
dance with internationally recognized principles on standard-
3.3 Symbols:
ization established in the Decision on Principles for the
2
Development of International Standards, Guides and Recom- λ = thermal conductivity, W/(m·K), [Btu·in/(h·ft ·°F)]
2 2
C = thermal conductance, W/(m ·K), [Btu/(h·ft ·°F)]
mendations issued by the World Trade Organization Technical
2 2
R = thermal resistance, m ·K/W, (h·ft ·°F/Btu)
Barriers to Trade (TBT) Committee.
Δx = specimen thickness, mm, (in.)
2 2
A = specimen cross sectional area, m , (ft )
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
2
Subcommittee D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2023. Published February 2024. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ɛ1
approved in 2001. Last previous edition in 2017 as D6744 – 06 (2017) . DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D6744-23. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6744
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D6744 − 06 (Reapproved 2017) D6744 − 23
Standard Test Method for
Determination of the Thermal Conductivity of Anode
1
Carbons by the Guarded Heat Flow Meter Technique
This standard is issued under the fixed designation D6744; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—Units formatting was corrected editorially in February 2017.
1. Scope Scope*
1.1 This test method covers a steady-state technique for the determination of the thermal conductivity of carbon materials in
thicknesses of less than 25 mm. The test method is useful for homogeneous materials having a thermal conductivity in the
−4 2
approximate range 1< λ < 30 W/(m·K), (thermal resistance in the range from 10 to 400 × 10 m ·K/W) over the approximate
temperature range from 150 K to 600 K. It can be used outside these ranges with reduced accuracy for thicker specimens and for
thermal conductivity values up to 60 W ⁄(m·K).
NOTE 1—It is not recommended to test graphite cathode materials using this test method. Graphites usually have a very low thermal resistance, and the
interfaces between the specimen to be tested and the instrument become more significant than the specimen itself.
1.2 This test method is similar in concept to Test Methods E1530 and C518. Significant attention has been paid to ensure that the
thermal resistance of contacting surfaces is minimized and reproducible.
1.3 The values stated in SI units are regarded as standard.
1.3.1 Exception—The values given in parentheses are for information only.
1.4 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 healthsafety, health, and environmental practices and determine
the applicability of regulatory limitations prior to use.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
E1530 Test Method for Evaluating the Resistance to Thermal Transmission by the Guarded Heat Flow Meter Technique
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
Current edition approved Jan. 1, 2017Nov. 1, 2023. Published February 2017February 2024. Originally approved in 2001. Last previous edition in 20112017 as D6744 – 06
ɛ1
(2011)(2017) . DOI: 10.1520/D6744-06R17E01. 10.1520/D6744-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6744 − 23
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminology D4175.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 average temperature, n—the average temperature of a surface is the area-weighted mean temperature of that surface.
3.2.2 heat flux transducer, HFT, n—a device that produces an electrical output that is a function of the heat flux, in a predefined
and reproducible manner.
3.2.3 thermal conductance, C, n—the time rate of heat flux through a unit area of a body induced by unit temperature difference
between the body surfaces.
3.2.4 thermal conductivity, λ, of a solid material, n—the time rate of heat flow, under steady conditions, through unit area, per unit
temperature gradient in the direction perpendicular to the area.
3.2.5 thermal resistance, R, n—the rec
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.