ASTM C534-01a

Designation: C 534 – 01a
Standard Specification for
Preformed Flexible Elastomeric Cellular Thermal Insulation
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in Sheet and Tubular Form
This standard is issued under the fixed designation C 534; 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.
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1. Scope Properties by Means of the Heat Flow Meter Apparatus
C 585 Practice for Inner and Outer Diameters of Rigid
1.1 This specification covers preformed flexible elastomeric
Thermal Insulation for Nominal Sizes of Pipe and Tubing
cellular thermal insulation in sheet and tubular form. Grade 1
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(NPS System)
covers materials to be used on commercial or industrial
C 692 Test Method for Evaluating the Influence of Thermal
systems with operating temperatures from -57 to 104°C (-70 to
Insulations on External Stress Corrosion Cracking Ten-
220°F), Grade 2 covers material used on industrial systems
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dency of Austenitic Stainless Steel
with operating temperatures from -40 to 175°C (-40 to 350°F),
C 795 Specification for Thermal Insulation for Use in Con-
and Grade 3 covers material used on industrial systems with
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tact with Austenitic Stainless Steel
operating temperatures from -40 to 120°C (-40 to 250°F)
C 871 Test Methods for Chemical Analysis of Thermal
where halogens are not permitted.
Insulation Materials for Leachable Chloride, Fluoride,
1.2 The values stated in SI units are to be regarded as the
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Silicate, and Sodium Ions
standard. The inch-pound equivalents of SI units, given in
C 1045 Practice for Calculating Thermal Transmission
parentheses, may be approximate.
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Properties Under Steady-State Conditions
1.3 This standard does not purport to address all of the
C 1058 Practice for Selecting Temperatures for Evaluating
safety concerns, if any, associated with its use. It is the
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and Reporting Thermal Properties of Thermal Insulation
responsibility of the user of this standard to establish appro-
C 1114 TestMethodforSteady-StateThermalTransmission
priate safety and health practices and determine the applica-
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Properties by Means of the Thin-Heater Apparatus
bility of regulatory limitations prior to use.
C 1304 Test Method for Assessing the Odor Emission of
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2. Referenced Documents Thermal Insulation Materials
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D 883 Terminology Relating to Plastics
2.1 ASTM Standards:
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D 1622 Test Method forApparent Density of Rigid Cellular
C 168 Terminology Relating to Thermal Insulation
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Plastics
C 177 Test Method for Steady-State Heat Flux Measure-
D 1667 Specification for Flexible Cellular Materials-Vinyl
ments and Thermal Transmission Properties by Means of
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Chloride Polymers and Copolymers (Closed-Cell Foam)
the Guarded-Hot-Plate Apparatus
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E 84 Test Method for Surface Burning Characteristics of
C 209 Test Methods for Cellulosic Fiber Insulating Board
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Building Materials
C 390 Criteria for Sampling and Acceptance of Preformed
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E 96 Test Methods for Water Vapor Transmission of Mate-
Thermal Insulation Lots
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rials
C 335 Test Method for Steady-State Heat Transfer Proper-
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ties of Horizontal Pipe Insulation
3. Terminology
C 411 Test Method for Hot-Surface Performance of High-
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3.1 Definitions—Termsusedinthisspecificationaredefined
Temperature Thermal Insulation
in Terminology C 168 and in Terminology D 883.
C 447 Practice for Estimating the Maximum Use Tempera-
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3.2 Definition of Term Specific to This Standard:
ture of Thermal Insulations
3.2.1 cellular elastomeric foam—a closed-cell foam made
C 518 Test Method for Steady-State Thermal Transmission
of natural or synthetic rubber, or a mixture of the two, and
containing other polymers, other chemicals, or both, which
may be modified by organic or inorganic additives. These
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This specification is under the jurisdiction of ASTM Committee C16 on
foams have properties similar to those of vulcanized rubber,
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
Organic and Nonhomogeneous Inorganic Thermal Insulations.
Current edition approved Dec. 10, 2001. Published January 2002. Originally
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published as C 534 - 64T. Last previous edition C 534 - 01. Annual Book of ASTM Standards, Vol 08.01.
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Annual Book of ASTM Standards, Vol 04.06. Annual Book of ASTM Standards, Vol 04.07.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C 534 – 01a
namely, (1) the ability to be converted from a thermoplastic to 5.3 Flexible, elastomeric, cellular thermal insulations shall
a thermosetting state by cross-linking (vulcanization) and (2) be of uniform core density and have closed cells. Even though
the ability to recover substantially its original shape when
these insulation materials may have a smooth skin surface on
strained or elongated.
...