ASTM C534/C534M-23

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

ABSTRACT
This specification covers sheet and tubular preformed flexible elastomeric cellular thermal insulation. The materials are classified into three grades according to the operating temperature range of the industrial systems that each material is used for. The non-thermoplastic, thermoset products should be made of natural or synthetic rubber that may be modified using various thermoplastic or thermosetting resins, plasticizers, modifiers, antioxidants, curatives, blowing agents, and other additives. All products should be tested using the prescribed procedures and conform to the specified values of apparent thermal conductivity, water absorption, water-vapor permeability, and linear shrinkage.
SCOPE
1.1 This specification covers preformed flexible elastomeric cellular-thermal insulation in sheet and tubular form. Grade 1 covers materials to be used on commercial or industrial systems with operating temperatures from –183 to 104°C [–297 to 220°F], Grade 2 covers material used on industrial systems with operating temperatures from –183 to 150°C [–297 to 300°F], and Grade 3 covers material used on industrial systems with operating temperatures from –183 to 120°C [–297 to 250°F] where halogens are not permitted.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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: 31-Dec-2022
• ICS: 83.100 - Cellular materials
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.22 - Organic and Nonhomogeneous Inorganic Thermal Insulations

Relations

• 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: C534/C534M − 23
Standard Specification for
Preformed Flexible Elastomeric Cellular Thermal Insulation
1
in Sheet and Tubular Form
This standard is issued under the fixed designation C534/C534M; 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 ments and Thermal Transmission Properties by Means of
the Guarded-Hot-Plate Apparatus
1.1 This specification covers preformed flexible elastomeric
C390 Practice for Sampling and Acceptance of Thermal
cellular-thermal insulation in sheet and tubular form. Grade 1
Insulation Lots
covers materials to be used on commercial or industrial
C335 Test Method for Steady-State Heat Transfer Properties
systems with operating temperatures from –183 to 104°C
of Pipe Insulation
[–297 to 220°F], Grade 2 covers material used on industrial
C411 Test Method for Hot-Surface Performance of High-
systems with operating temperatures from –183 to 150°C
Temperature Thermal Insulation
[–297 to 300°F], and Grade 3 covers material used on
C447 Practice for Estimating the Maximum Use Tempera-
industrial systems with operating temperatures from –183 to
ture of Thermal Insulations
120°C [–297 to 250°F] where halogens are not permitted.
C518 Test Method for Steady-State Thermal Transmission
1.2 The values stated in either SI units or inch-pound units
Properties by Means of the Heat Flow Meter Apparatus
are to be regarded separately as standard. The values stated in
C534 Specification for Preformed Flexible Elastomeric Cel-
each system may not be exact equivalents; therefore, each
lular Thermal Insulation in Sheet and Tubular Form
system shall be used independently of the other. Combining
C585 Practice for Inner and Outer Diameters of Thermal
values from the two systems may result in non-conformance
Insulation for Nominal Sizes of Pipe and Tubing
with the standard.
C692 Test Method for Evaluating the Influence of Thermal
1.3 This standard does not purport to address all of the
Insulations on External Stress Corrosion Cracking Ten-
safety concerns, if any, associated with its use. It is the
dency of Austenitic Stainless Steel
responsibility of the user of this standard to establish appro-
C795 Specification for Thermal Insulation for Use in Con-
priate safety, health, and environmental practices and deter-
tact with Austenitic Stainless Steel
mine the applicability of regulatory limitations prior to use.
C871 Test Methods for Chemical Analysis of Thermal Insu-
1.4 This international standard was developed in accor-
lation Materials for Leachable Chloride, Fluoride, Silicate,
dance with internationally recognized principles on standard-
and Sodium Ions
ization established in the Decision on Principles for the
C1045 Practice for Calculating Thermal Transmission Prop-
Development of International Standards, Guides and Recom-
erties Under Steady-State Conditions
mendations issued by the World Trade Organization Technical
C1058 Practice for Selecting Temperatures for Evaluating
Barriers to Trade (TBT) Committee.
and Reporting Thermal Properties of Thermal Insulation
C1114 Test Method for Steady-State Thermal Transmission
2. Referenced Documents
Properties by Means of the Thin-Heater Apparatus
2
2.1 ASTM Standards:
C1304 Test Method for Assessing the Odor Emission of
C168 Terminology Relating to Thermal Insulation
Thermal Insulation Materials
C177 Test Method for Steady-State Heat Flux Measure-
C1427 Specification for Extruded Preformed Flexible Cel-
lular Polyolefin Thermal Insulation in Sheet and Tubular
1
Form
This specification is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
C1763 Test Method for Water Absorption by Immersion of
Organic and Nonhomogeneous Inorganic Thermal Insulations.
Thermal Insulation Materials
Current edition approved Jan. 1, 2023. Published February 2023. Originally
D883 Terminology Relating to Plastics
approved in 1964. Last previous edition approved in 2020 as C0534/C534M – 20a.
DOI: 10.1520/C0534_C0534M-23.
D1622 Test Method for Apparent Density of Rigid Cellular
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
D1667 Specification for Flexible Cellular Materials—Poly
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. (Vinyl Chloride) Foam (Closed-Cell)
Copyright © ASTM Inter
...

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: C534/C534M − 20a C534/C534M − 23
Standard Specification for
Preformed Flexible Elastomeric Cellular Thermal Insulation
1
in Sheet and Tubular Form
This standard is issued under the fixed designation C534/C534M; 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 preformed flexible elastomeric cellular-thermal insulation in sheet and tubular form. Grade 1 covers
materials to be used on commercial or industrial systems with operating temperatures from –183 to 104°C [–297 to 220°F], Grade
2 covers material used on industrial systems with operating temperatures from –183 to 150°C [–297 to 300°F], and Grade 3 covers
material used on industrial systems with operating temperatures from –183 to 120°C [–297 to 250°F] where halogens are not
permitted.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 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
C390 Practice for Sampling and Acceptance of Thermal Insulation Lots
C335 Test Method for Steady-State Heat Transfer Properties of Pipe Insulation
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
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 Nov. 1, 2020Jan. 1, 2023. Published November 2020February 2023. Originally approved in 1964. Last previous edition approved in 2020 as
C0534/C534M – 20.C0534/C534M – 20a. DOI: 10.1520/C0534_C0534M-20A.10.1520/C0534_C0534M-23.
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

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C534/C534M − 23
C692 Test Method for Evaluating the Influence of Thermal Insulations on External Stress Corrosion Cracking Tendency of
Austenitic Stainless Steel
C795 Specification for Thermal Insulation for Use in Contact with Austenitic Stainless Steel
C871 Test Methods for Chemical Analysis of Thermal Insulation Materials for Leachable Chloride, Fluoride, Silicate, and
Sodium Ions
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
C1304 Test Method for Assessing the Odor Emission of Thermal Insulation Materials
C1427 Specification for Extruded Preformed Flex
...