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    ASTM E1225-13 REDLINE

    Standard Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique
    • 발행일 : 2013-10-01
    • 발행기관 : ASTM
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적용범위

1.1 This 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 1For 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 2This test method may also be used to evaluate the contact thermal conductance/resistance of materials.

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.

국제분류(ICS)코드
페이지수 10
Edition 13

이력정보

No. 표준번호 표준명 발행일 상태
1 ASTM E1225-25상세보기 Standard Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique 2025-04-01 표준
2 ASTM E1225-25 REDLINE상세보기 Standard Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique 2025-04-01 표준
3 ASTM E1225-20상세보기 Standard Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique 2020-09-01 구판
4 ASTM E1225-20 REDLINE상세보기 Standard Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique 2020-09-01 구판
5 ASTM E1225-13 REDLINE상세보기 Standard Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique 2013-10-01 구판
6 ASTM E1225-13상세보기 Standard Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique 2013-10-01 구판
7 ASTM E1225-09상세보기 Standard Test Method for Thermal Conductivity of Solids by Means of the Guarded-Comparative-Longitudinal Heat Flow Technique 2009-03-15 구판
8 ASTM E1225-04상세보기 Standard Test Method for Thermal Conductivity of Solids by Means of the Guarded-Comparative-Longitudinal Heat Flow Technique 2004-05-01 구판
9 ASTM E1225-99상세보기 Standard Test Method for Thermal Conductivity of Solids by Means of the Guarded-Comparative-Longitudinal Heat Flow Technique 1999-03-10 구판

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