ASTM C165-00

Standard Test Method for Measuring Compressive Properties of Thermal Insulations

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, but that may or may not have 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 . 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 may 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 load-deformation 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Oct-2000
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.32 - Mechanical Properties

Relations

• Replaces: ASTM C165-95 - Standard Test Method for Measuring Compressive Properties of Thermal Insulations
• Effective Date: 10-Oct-2000
• Replaced By: ASTM C165-05 - Standard Test Method for Measuring Compressive Properties of Thermal Insulations
• Effective Date: 01-May-2005
• Referred By: ASTM C612-14(2019) - Standard Specification for Mineral Fiber Block and Board Thermal Insulation
• Effective Date: 10-Oct-2000
• Referred By: ASTM D7425/D7425M-13(2019) - Standard Specification for Spray Polyurethane Foam Used for Roofing Applications
• Effective Date: 10-Oct-2000
• Referred By: ASTM F3319-20 - Standard Specification for Selection and Application of Field-Installed Cryogenic Pipe and Equipment Insulation Systems on Liquefied Natural Gas (LNG)-Fueled Ships
• Effective Date: 10-Oct-2000
• Referred By: ASTM C1902-22a - Standard Specification for Cellular Glass Insulation Used in Building and Roof Applications
• Effective Date: 10-Oct-2000
• Referred By: ASTM C1676/C1676M-23 - Standard Specification for Microporous Thermal Insulation
• Effective Date: 10-Oct-2000
• Referred By: ASTM C552-22 - Standard Specification for Cellular Glass Thermal Insulation
• Effective Date: 10-Oct-2000
• Referred By: ASTM C1728-23 - Standard Specification for Flexible Aerogel Insulation
• Effective Date: 10-Oct-2000
• Referred By: ASTM E1730-19 - Standard Specification for Rigid Foam for Use in Structural Sandwich Panel Cores
• Effective Date: 10-Oct-2000
• Referred By: ASTM C610-17(2023) - Standard Specification for Molded Expanded Perlite Block and Pipe Thermal Insulation
• Effective Date: 10-Oct-2000
• Referred By: ASTM C656-17(2023) - Standard Specification for Structural Insulating Board, Calcium Silicate
• Effective Date: 10-Oct-2000
• Referred By: ASTM C1482-23 - Standard Specification for Polyimide Flexible Cellular Thermal and Sound Absorbing Insulation
• Effective Date: 10-Oct-2000
• Referred By: ASTM C1029-20 - Standard Specification for Spray-Applied Rigid Cellular Polyurethane Thermal Insulation
• Effective Date: 10-Oct-2000
• Referred By: ASTM C209-20 - Standard Test Methods for Cellulosic Fiber Insulating Board
• Effective Date: 10-Oct-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C 165 – 00
Standard Test Method for
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Measuring Compressive Properties of Thermal Insulations
This standard is issued under the fixed designation C 165; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2. Referenced Documents
1.1 This test method covers two procedures for determining 2.1 ASTM Standards:
the compressive resistance of thermal insulations. C 167 Test Methods for Thickness and Density of Blanket
2
1.1.1 Procedure A covers thermal insulations having an or Batt Thermal Insulations
approximate straight-line portion of a load-deformation curve, C 168 Terminology Relating to Thermal Insulating Materi-
2
but that may or may not have an identifiable yield point as als
shown in Figs. 1 and 2. Such behavior is typical of most rigid C 240 Test Methods of Testing Cellular Glass Insulation
2
board or block-type insulations. Block
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1.1.2 Procedure B covers thermal insulations that become E 4 Practices for Force Verification of Testing Machines
increasingly more stiff as load is increased, as shown in Fig. 3. E 177 Practice for the Use of the Terms Precision and Bias
4
Such behavior is typical of fibrous batt and blanket insulations in ASTM Test Methods
that have been compressed previously to at least the same E 691 Practice for Conducting an Interlaboratory Study to
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deformation by compression packaging or mechanical soften- Determine the Precision of a Test Method
ing.
3. Terminology
1.2 It is recognized that the classification of materials under
Procedures A and B may not hold in all cases. For example, 3.1 Definitions:
3.1.1 Terminology C 168 applies to the terms used in this
some batt or blanket materials that have not been compression
packaged will exhibit behavior more typical of ProcedureAfor method.
3.2 Additional terms are defined as follows:
theirfirstloadings.Also,somehigherdensityfibrousinsulation
3.3 compressive deformation—the decrease in specimen
boards that have been precompressed will exhibit load-
deformation curves more typical of Procedure B. There will thickness by a compressive load.
3.4 compressive load—the compressive force carried by the
also be thermal insulations with load-deformation curves that
follow none of the three types shown here; that is, curves with test specimen at any given moment.
3.5 compressive modulus of elasticity—the ratio of the
no straight-line portion, curves with compaction areas, and
curves that change from negative to positive slope. compressive load per unit of original area to the corresponding
deformation per unit of original thickness below the propor-
1.3 This test method does not cover reflective or loose fill
insulations. tional limit of a material.
3.6 compressive resistance—the compressive load per unit
1.4 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for of original area at a specified deformation. For those materials
where the specified deformation is regarded as indicating the
information only.
1.5 This standard does not purport to address all of the start of complete failure, the compressive resistance may
properly be called the compressive strength.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3.7 proportional limit in compression—the greatest com-
pressive load that a material is capable of sustaining without
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. any deviation from proportionality of load to deformation.
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ThistestmethodisunderthejurisdictionofASTMCommitteeC16onThermal
Insulation and is the direct responsibility of Subcommittee C16.32 on Mechanical
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Properties. Annual Book of ASTM Standards, Vol 04.06.
3
Current edition approved Oct. 10, 2000. Published December 2000. Originally Annual Book of ASTM Standards, Vol 03.01.
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published as C 165 – 41T. Last previous edition C 165 – 95. Replaces C 203 – 45T. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C165–00
FIG. 3 Procedure B—Increasing Stiffness
considered. All load-deformation data should be reviewed
FIG. 1 Procedure A—Straight Line Portion with Definite Yield
Point carefully for applicability prior to acceptance for use in
engineering designs differing widely in load, load application
rate, and material dimensi
...