ASTM C165-23
Standard Test Method for Measuring Compressive Properties of Thermal Insulations

Standard No.

ASTM C165-23

Release Date

2023

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C165-23

Scope

1.1 This test method covers two procedures for determining the compressive resistance of thermal insulations. 1.1.1 Procedure A covers thermal insulations having an approximate straight-line portion of a load-deformation curve, with or without an identifiable yield point as shown in Figs. 1 and 2. Such behavior is typical of most rigid board or block-type insulations. 1.1.2 Procedure B covers thermal insulations that become increasingly more stiff as load is increased, as shown in Fig. 3. Such behavior is typical of fibrous batt and blanket insulations that have been compressed previously to at least the same deformation by compression packaging or mechanical softening. 1.2 It is recognized that the classification of materials under Procedures A and B shall not hold in all cases. For example, some batt or blanket materials that have not been compression packaged will exhibit behavior more typical of Procedure A for their first loadings. Also, some higher density fibrous insulation boards that have been precompressed will exhibit loaddeformation curves more typical of Procedure B. There will also be thermal insulations with load-deformation curves that follow none of the three types shown here; that is, curves with no straight-line portion, curves with compaction areas, and curves that change from negative to positive slope. 1.3 This test method does not cover reflective or loose fill insulations. 1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 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. 1.6 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.

ASTM C165-23 Referenced Document

• ASTM C167 Standard Test Methods for Thickness and Density of Blanket or Batt Thermal Insulations
• ASTM C168 Standard Terminology Relating to Thermal Insulation
• ASTM C240 Standard Test Methods of Testing Cellular Glass Insulation Block
• ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• ASTM E4 Standard Practices for Force Verification of Testing Machines
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM C165-23 history

• 2023 ASTM C165-23 Standard Test Method for Measuring Compressive Properties of Thermal Insulations
• 2007 ASTM C165-07(2017) Standard Test Method for Measuring Compressive Properties of Thermal Insulations
• 2007 ASTM C165-07(2012) Standard Test Method for Measuring Compressive Properties of Thermal Insulations
• 2007 ASTM C165-07 Standard Test Method for Measuring Compressive Properties of Thermal Insulations
• 2005 ASTM C165-05 Standard Test Method for Measuring Compressive Properties of Thermal Insulations
• 2000 ASTM C165-00 Standard Test Method for Measuring Compressive Properties of Thermal Insulations
• 2000 ASTM C165-95 Standard Test Method for Measuring Compressive Properties of Thermal Insulations