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  • ASTM
    C870-11 Standard Practice for Conditioning of Thermal Insulating Materials
    Edition: 2011
    $87.60
    Unlimited Users per year

Description of ASTM-C870 2011

ASTM C870 - 11

Standard Practice for Conditioning of Thermal Insulating Materials

Active Standard ASTM C870 | Developed by Subcommittee: C16.31

Book of Standards Volume: 04.06




ASTM C870

Significance and Use

The conditioning prescribed in this recommended practice is designed to obtain reproducible test results on thermal insulating materials. Results of tests obtained on these materials under uncontrolled atmospheric conditions are not comparable with each other. Some of the physical properties of thermal insulating materials are influenced by relative humidity and temperature in a manner that affects the results of tests. In this regard, such information is provided in pertinent material specifications and test methods by stating the physical properties relative to the specific ambient or test conditions.

Note 1In some cases (for example, dimensionally unstable materials), the dry mass cannot easily be established and original mass has to be used.

1. Scope

1.1 This practice covers the conditioning of thermal insulating materials for tests. Since prior exposure of insulating materials to high or low humidity will affect the equilibrium moisture content, a procedure is also given for preconditioning the materials.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with 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 and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C168 Terminology Relating to Thermal Insulation

E41 Terminology Relating To Conditioning

E171 Practice for Conditioning and Testing Flexible Barrier Packaging

E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)

ISO Standard

ISO 544 Standard Atmospheres for Conditioning and/or Testing

Keywords

conditioning; preconditioning; thermal insulating materials; Cellular thermal insulation; Conditioning; Insulating materials; Mineral fiber insulation; Preconditioning; Thermal insulating materials;


ICS Code

ICS Number Code 91.100.60 (Thermal and sound insulating materials)


DOI: 10.1520/C0870-11

ASTM International is a member of CrossRef.

ASTM C870

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