ASTM C1427-21

Standard Specification for Extruded Preformed Flexible Cellular Polyolefin Thermal Insulation in Sheet and Tubular Form

ABSTRACT
This specification covers the standard for two grades of extruded preformed flexible cellular polyolefin thermal insulation. Physical properties of preformed flexible cellular polyofelin thermal insulation which are mandatory for thermal design are also covered. Properties such as density and coefficient of thermal expansion (CTE) have been deemed nonmandatory for thermal design. The thermal insulation shall comply with physical requirements. Such physical requirements include thermal conductivity, water vapor permeability, and linear shrinkage and shall be determined by test methods specified here.
SCOPE
1.1 This specification covers extruded preformed flexible cellular polyolefin thermal insulation operating temperatures from –150°F to 200°F (–101°C to 93°C). For specific applications, the actual temperature limit shall be agreed upon between the manufacturer and the purchaser.  
1.2 The use of thermal insulation materials covered by this specification are governed by codes and standards that address fire performance. Contact manufacturer for specific performance of product at the intended use thickness.  
1.3 This specification covers the physical properties of preformed flexible cellular polyolefin thermal insulation, which have been deemed mandatory for thermal design. Physical properties such as density and coefficient of thermal expansion (CTE) have been deemed nonmandatory for thermal design. Nonmandatory physical properties have been included in Appendix X1 for information purposes only.  
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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.

General Information

• Status: Published
• Publication Date: 28-Feb-2021
• ICS: 27.220 - Heat recovery. Thermal insulation
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.22 - Organic and Nonhomogeneous Inorganic Thermal Insulations

Relations

• Refers: ASTM D3575-20 - Standard Test Methods for Flexible Cellular Materials Made from Olefin Polymers
• Effective Date: 01-Feb-2020
• Refers: ASTM C1763-20 - Standard Test Method for Water Absorption by Immersion of Thermal Insulation Materials
• Effective Date: 01-May-2020
• Refers: ASTM D1622-20 - Standard Test Method for Apparent Density of Rigid Cellular Plastics
• Effective Date: 15-Jul-2020

Standards Content (Sample)

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.
Designation: C1427 −21
Standard Specification for
Extruded Preformed Flexible Cellular Polyolefin Thermal
1
Insulation in Sheet and Tubular Form
This standard is issued under the fixed designation C1427; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers extruded preformed flexible
C168 Terminology Relating to Thermal Insulation
cellular polyolefin thermal insulation operating temperatures
C177 Test Method for Steady-State Heat Flux Measure-
from –150°F to 200°F (–101°C to 93°C). For specific
ments and Thermal Transmission Properties by Means of
applications, the actual temperature limit shall be agreed upon
the Guarded-Hot-Plate Apparatus
between the manufacturer and the purchaser.
C335 Test Method for Steady-State Heat Transfer Properties
1.2 The use of thermal insulation materials covered by this
of Pipe Insulation
specification are governed by codes and standards that address
C390 Practice for Sampling and Acceptance of Thermal
fire performance. Contact manufacturer for specific perfor- Insulation Lots
mance of product at the intended use thickness. C411 Test Method for Hot-Surface Performance of High-
Temperature Thermal Insulation
1.3 This specification covers the physical properties of
C447 Practice for Estimating the Maximum Use Tempera-
preformed flexible cellular polyolefin thermal insulation,
ture of Thermal Insulations
which have been deemed mandatory for thermal design.
C518 Test Method for Steady-State Thermal Transmission
Physical properties such as density and coefficient of thermal
Properties by Means of the Heat Flow Meter Apparatus
expansion (CTE) have been deemed nonmandatory for thermal
C534 Specification for Preformed Flexible Elastomeric Cel-
design. Nonmandatory physical properties have been included
lular Thermal Insulation in Sheet and Tubular Form
in Appendix X1 for information purposes only.
C585 Practice for Inner and Outer Diameters of Thermal
Insulation for Nominal Sizes of Pipe and Tubing
1.4 The values stated in inch-pound units are to be regarded
C670 Practice for Preparing Precision and Bias Statements
as standard. The values given in parentheses are mathematical
for Test Methods for Construction Materials
conversions to SI units that are provided for information only
C1045 Practice for Calculating Thermal Transmission Prop-
and are not considered standard.
erties Under Steady-State Conditions
1.5 This standard does not purport to address all of the
C1058 Practice for Selecting Temperatures for Evaluating
safety concerns, if any, associated with its use. It is the
and Reporting Thermal Properties of Thermal Insulation
responsibility of the user of this standard to establish appro-
C1114 Test Method for Steady-State Thermal Transmission
priate safety, health, and environmental practices and deter-
Properties by Means of the Thin-Heater Apparatus
mine the applicability of regulatory limitations prior to use. C1303 Test Method for Predicting Long-Term Thermal Re-
sistance of Closed-Cell Foam Insulation
1.6 This international standard was developed in accor-
C1304 Test Method for Assessing the Odor Emission of
dance with internationally recognized principles on standard-
Thermal Insulation Materials
ization established in the Decision on Principles for the
C1763 Test Method for Water Absorption by Immersion of
Development of International Standards, Guides and Recom-
Thermal Insulation Materials
mendations issued by the World Trade Organization Technical
D883 Terminology Relating to Plastics
Barriers to Trade (TBT) Committee.
D1622 Test Method for Apparent Density of Rigid Cellular
Plastics
1
This specification is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
2
Organic and Nonhomogeneous Inorganic Thermal Insulations. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2021. Published March 2021. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1999. Last previous edition approved in 2016 as C1427 – 16. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C1427-21. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page:
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C1427 − 16 C1427 − 21
Standard Specification for
Extruded Preformed Flexible Cellular Polyolefin Thermal
1
Insulation in Sheet and Tubular Form
This standard is issued under the fixed designation C1427; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers extruded preformed flexible cellular polyolefin thermal insulation operating temperatures from
–150°F to 200°F (–101°C to 93°C). For specific applications, the actual temperature limit shall be agreed upon between the
manufacturer and the purchaser.
1.2 The use of thermal insulation materials covered by this specification are governed by codes and standards that address fire
performance. Contact manufacturer for specific performance of product at the intended use thickness.
1.3 This specification covers the physical properties of preformed flexible cellular polyolefin thermal insulation, which have been
deemed mandatory for thermal design. Physical properties such as density and coefficient of thermal expansion (CTE) have been
deemed nonmandatory for thermal design. Nonmandatory physical properties have been included in Appendix X1 for information
purposes only.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
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 safety, health, and healthenvironmental 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation
C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the
Guarded-Hot-Plate Apparatus
C335 Test Method for Steady-State Heat Transfer Properties of Pipe Insulation
C390 Practice for Sampling and Acceptance of Thermal Insulation Lots
1
This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on Organic and
Nonhomogeneous Inorganic Thermal Insulations.
Current edition approved Dec. 1, 2016March 1, 2021. Published January 2017March 2021. Originally approved in 1999. Last previous edition approved in 20132016 as
C1427 – 13.C1427 – 16. DOI: 10.1520/C1427-16.10.1520/C1427-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1427 − 21
C411 Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation
C447 Practice for Estimating the Maximum Use Temperature of Thermal Insulations
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
C534 Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form
C585 Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and Tubing
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
C1045 Practice for Calculating Thermal Transmission Properties Under Steady-State Conditions
C1058 Practice for Selecting Temperatures for Evaluating and Reporting Thermal Properties of Thermal Insulation
C1114 Test Method for Steady-State Thermal Transmission Properties by Means of the Thin-Heater Apparatus
C1303 Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam Insulation
C1304 Test Method for Assessing the Odor Emission of
...