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ASTM E 1225 : 2013 : REDLINE

ASTM E 1225 : 2013 : REDLINE

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Standard Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique

Available format(s)

PDF

Superseded date

11-18-2020

Superseded by

ASTM E 1225 : 2020 : REDLINE

Language(s)

English

Published date

10-01-2013

Publisher

American Society for Testing and Materials

US$75.00
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PDF - English
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CONTAINED IN VOL. 14.02, 2017 Defines a steady state technique for the determination of the thermal conductivity, lambda, of homogeneous-opaque solids.

Committee
E 37
DocumentType
Redline
Pages
13
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

1.1This test method describes a steady state technique for the determination of the thermal conductivity, λ, of homogeneous-opaque solids (see Notes 1 and 2). This test method is applicable to materials with effective thermal conductivities in the range 0.2 < λ < 200 W/(m·K) over the temperature range between 90 and 1300 K. It can be used outside these ranges with decreased accuracy.

Note 1—For purposes of this technique, a system is homogeneous if the apparent thermal conductivity of the specimen, λ A, does not vary with changes of thickness or cross-sectional area by more than ±5 %. For composites or heterogeneous systems consisting of slabs or plates bonded together, the specimen should be more than 20 units wide and 20 units thick, respectively, where a unit is the thickness of the thickest slab or plate, so that diameter or length changes of one-half unit will affect the apparent λA by less than ±5 %. For systems that are non-opaque or partially transparent in the infrared, the combined error due to inhomogeneity and photon transmission should be less than ±5 %. Measurements on highly transparent solids must be accompanied with infrared absorption coefficient information, or the results must be reported as apparent thermal conductivity, λA.
 
Note 2—This test method may also be used to evaluate the contact thermal conductance/resistance of materials.

1.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3This 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.

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NACE RP 03 99 : 2004 PLANT-APPLIED EXTERNAL COAL TAR ENAMEL PIPE COATING SYSTEMS: APPLICATION, PERFORMANCE, AND QUALITY CONTROL
ASTM E 1530 : 2011 Standard Test Method for Evaluating the Resistance to Thermal Transmission of Materials by the Guarded Heat Flow Meter Technique
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