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ASTM C 1058 : 1997

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 Practice for Selecting Temperatures for Evaluating and Reporting Thermal Properties of Thermal Insulation

Superseded date

11-11-2014

Superseded by

ASTM C 1058 : 2003

Published date

01-01-1997

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Committee
C 16
DocumentType
Standard Practice
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

1.1 This practice covers standard mean temperatures for reporting thermal properties of thermal insulations, products, and materials, and of related systems and components, both insulated and uninsulated.

1.2 Thermal properties may be determined as a function of temperature by standard test methods. (Test Methods C177, C201, C236, C335, C518, C745, C976, C1114, Guide C653, and Practice C687, all in combination with Practice C1045.)

Note 1-Standard referenced materials are needed to span the temperature range of the tests.

1.3 This practice recommends standard temperature conditions for use in testing and evaluating thermal properties as a function of temperature by standard test methods.

1.4 General applications of thermal insulations include:

1.4.1 building envelopes,

1.4.2 mechanical systems or processes, and building and industrial insulations.

1.5 The mean test temperatures to measure thermal properties for the two applications shall be selected from those listed in Table 1. It is recommended that thermal properties be reported at mean temperatures that span at least 80% of the intended end-use temperature range. The temperature differences for any chosen mean temperature will depend upon both the thermal insulation application (see appropriate materials specification), the method of evaluation, and the limitations of an apparatus. Temperature differences or relevant temperature conditions required by ASTM material specifications shall take parecedence over those recommended in this practice.

1.5.1 Standard temperatures are presented for conditions where both surfaces are exposed to fixed ambient temperatures that are typical for testing building constructions, both insulated and uninsulated (Table 2).

1.5.2 Standard temperatures are presented for conditions where the temperatures of the two surfaces are fixed and surface coefficients are not considered (Table 2 or Table 3).

1.5.3 For conditions where the temperature of only one surface is fixed with the other exposed to fixed ambient temperature, use the mean temperatures of Table 1.

1.6 The values given in SI units are to be regarded as the standard. Approximate inch-pound units are provided in the tables.

1.7 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.

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ASTM C 1114 : 2006 : R2019 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Thin-Heater Apparatus
ASTM C 1484 : 2010 : R2018 Standard Specification for Vacuum Insulation Panels
ASTM C 1393 : 2014 : R2019 Standard Specification for Perpendicularly Oriented Mineral Fiber Roll and Sheet Thermal Insulation for Pipes and Tanks

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