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ASTM C921-03a

(Practice)

Standard Practice for Determining the Properties of Jacketing Materials for Thermal Insulation

Standard Practice for Determining the Properties of Jacketing Materials for Thermal Insulation

ABSTRACT
This practice establishes the standard procedures for determining the material and physical properties for jacketing materials applied over thermal insulation on piping and equipment, including materials applied solely for physical protection, and materials applied as vapor retarders. This practice does not cover field applied mastics or barrier coatings and their attendant reinforcements, nor does it cover jackets for buried insulation systems. Jackets covered here are grouped into two types, each of which are subdivided further into grades and classes. Properties to which the jackets should conform to are permeance, tensile strength, puncture resistance, surface burning characteristics, flame resistance permeance, dimensional stability, fungi resistance, elevated temperature and humidity resistance, and thermal integrity.
SCOPE
1.1 This practice covers jackets applied over thermal insulation on piping and equipment, including materials applied solely for physical protection, and materials applied as vapor retarders.
1.2 This practice provides material and physical requirements, or both, for jackets. Guidance in selecting the proper jacket for a given application can be found in Guide C 1423.
1.3 This practice does not cover field applied mastics or barrier coatings and their attendant reinforcements, nor does it cover jackets for buried insulation systems.
1.4 The values stated in inch-pound units are to be regarded as standard. SI units are given in parenthesis.
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
30-Sep-2003
ICS
27.220 - Heat recovery. Thermal insulation
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.33 - Insulation Finishes and Moisture
Current Stage
Ref Project

Relations

Replaces
ASTM C921-02 - Standard Specification for Jackets for Thermal Insulation
Effective Date
01-Oct-2003
Replaced By
ASTM C921-09 - Standard Practice for Determining the Properties of Jacketing Materials for Thermal Insulation
Effective Date
01-Apr-2009
Referred By
ASTM C592-22a - Standard Specification for Mineral Fiber Blanket Insulation and Blanket-Type Pipe Insulation (Metal-Mesh Covered) (Industrial Type)
Effective Date
01-Oct-2003
Referred By
ASTM C1126-19 - Standard Specification for Faced or Unfaced Rigid Cellular Phenolic Thermal Insulation
Effective Date
01-Oct-2003
Referred By
ASTM C547-22a - Standard Specification for Mineral Fiber Pipe Insulation
Effective Date
01-Oct-2003
Referred By
ASTM C755-20 - Standard Practice for Selection of Water Vapor Retarders for Thermal Insulation
Effective Date
01-Oct-2003
Referred By
ASTM C612-14(2019) - Standard Specification for Mineral Fiber Block and Board Thermal Insulation
Effective Date
01-Oct-2003
Referred By
ASTM C553-13(2019) - Standard Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial Applications
Effective Date
01-Oct-2003
Referred By
ASTM C1423-21 - Standard Guide for Selecting Jacketing Materials for Thermal Insulation
Effective Date
01-Oct-2003
Referred By
ASTM C1393-19 - Standard Specification for Perpendicularly Oriented Mineral Fiber Roll and Sheet Thermal Insulation for Pipes and Tanks
Effective Date
01-Oct-2003

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ASTM C921-03a - Standard Practice for Determining the Properties of Jacketing Materials for Thermal InsulationASTM C921-03a - Standard Practice for Determining the Properties of Jacketing Materials for Thermal Insulation
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ASTM C921-03a - Standard Practice for Determining the Properties of Jacketing Materials for Thermal Insulation
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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:C921–03a
Standard Practice for
Determining the Properties of Jacketing Materials for
1
Thermal Insulation
This standard is issued under the fixed designation C 921; 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 B 209 Specification for Aluminum and Aluminum-Alloy
5
Sheet and Plate
1.1 This practice covers jackets applied over thermal insu-
C 168 Terminology Relating to Thermal Insulating Materi-
lation on piping and equipment, including materials applied
6
als
solely for physical protection, and materials applied as vapor
C 390 Practice for Sampling andAcceptance of Preformed
retarders.
6
Thermal Insulation
1.2 This practice provides material and physical require-
C 921 Practice for Sampling andAcceptance of Preformed
ments, or both, for jackets. Guidance in selecting the proper
6
Thermal Insulation
jacket for a given application can be found in Guide C 1423.
C 1258 Practice for Sampling andAcceptance of Preformed
1.3 This practice does not cover field applied mastics or
6
Thermal Insulation
barrier coatings and their attendant reinforcements, nor does it
C 1263 Test Method for Thermal Integrity of Flexible
cover jackets for buried insulation systems.
6
Water Vapor Retarders
1.4 The values stated in inch-pound units are to be regarded
C 1338 Test Method for Determining Fungi Resistance of
as standard. SI units are given in parenthesis.
6
Insulation Materials and Facings
1.5 This standard does not purport to address all of the
C 1423 Guide for Selecting Jacketing Materials for Ther-
safety concerns, if any, associated with its use. It is the
6
mal Insulation
responsibility of the user of this standard to establish appro-
C 835 Test Method for Total Hemispherical Emittance of
priate safety and health practices and determine the applica-
6
Surfaces from 20 to 1400°C
bility of regulatory limitations prior to use.
D 828 Test Method for Tensile Properties of Paper and
2. Referenced Documents
Paperboard Using Constant-Rate-of-Elongation Appara-
7
tus
2.1 ASTM Standards:
D 882 Test Methods for Tensile Properties of Thin Plastic
A 167 Specification for Stainless and Heat-Resisting
8
2
Sheeting
Chromium-Nickel Steel Plate, Sheet, and Strip
D 1204 Test Method for Linear Dimensional Changes of
A 240 Specification for Heat-Resistant Chromium and
2
Nonrigid Thermoplastic Sheeting or Film at Elevated
chromim-Nickel Stainless Steel Plate, Sheet and Steel
9
Temperature
A 366/A366M Specification for Steel, Sheet, Carbon, Cold-
3
E84 Test Method for Surface Burning Characteristics of
Rolled, Commercial Quality
10
Building Materials
A 653/A653M Specification for Steel Sheet, Zinc Coated
E 96 Test Methods for Water Vapor Transmission of Mate-
(Galvanized), or Zinc-IronAlloy, Coated (Galvanealed) by
6
4
rials
the Hot-dip Process
2.2 TAPPI Standards:
A 792/A792M Specification for Steel Sheet, 55%
11
4
T461 Flame Resistance of Treated Paper and Paperboard
Aluminum-Zinc Alloy, Coated by the Hot-Dip Method
5
Annual Book of ASTM Standards, Vol 02.02.
1 6
This practice is under the jurisdiction of ASTM Committee C16 on Thermal Annual Book of ASTM Standards, Vol 04.06.
7
Insulation and is the direct responsibility of Subcommittee C16.33 on Insulation Annual Book of ASTM Standards, Vol 15.09.
8
Finishes and Moisture. Annual Book of ASTM Standards, Vol 08.01.
9
Current edition approved Oct. 1, 2003. Published October 2003. Originally Annual Book of ASTM Standards, Vol 08.03.
10
published in 1979. Last previous published in 2003 as C921–03. Annual Book of ASTM Standards, Vol 04.07.
2 11
Annual Book of ASTM Standards, Vol 01.03. Available fromTechnicalAssociation of the Pulp and Paper Industry (TAPPI),
3
Annual Book of ASTM Standards, Vol 01.05. P.O. Box 105113,Atlanta, GA30348; 15Technology Parkway South, Norcross, GA
4
Annual Book of ASTM Standards, Vol 01.06. 30092.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C921–03a
11
T803 Puncture Test of Containerboard those cases where high abuse resistance is required, it is
applied to the insulation prior to installation of a protective
3. Terminology jacket.
5.4 The non vapor-retarding Type II flexible jacket (Grades
3.1 Definitions—Definitions in Terminology C 168 apply to
1 and 2, class D) is used by itself in above ambient service
terms used in this practice, including the word jacket, which is
applications not requiring high abuse resistance. It may also be
d
...

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This specification covers the general requirements for faced thermal insulation boards composed of rigid cellular polyisocyanurate surfaced with other materials. This standard is intended to apply to rigid cellular polyurethane-modified polyisocyanurate thermal insulation board products that are commercially acceptable as nonstructural panels useful in building construction. The materials are classified as follows: Types I, II, III, IV, and V. Under Type I are Classes 1 and 2. Under Type II are Classes 1, 2, and 3. Under Type II Class 1 are Grades 1, 2, and 3. Rigid polyisocyanurate thermal insulation boards shall be based upon the reaction of an isocyanate with a polyol, or the reaction of an isocyanate with itself, or both, using a catalyst and blowing agents to form a rigid closed-cell-structured polyisocyanurate foam. The insulation foam core shall be homogeneous and of uniform density. The following test methods shall be performed to conform to the specified requirements: conditioning; thermal resistance; compressive strength; dimensional stability; flexural strength; tensile strength perpendicular to board surface; water absorption; and water vapor transmission.
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1.1 This specification covers the general requirements for faced thermal insulation boards composed of rigid cellular polyisocyanurate surfaced with other materials. The insulation boards are intended for use at temperatures between −40 and 200°F (−40 and 93°C). This specification does not cover cryogenic applications. Consult the manufacturer for specific recommendations and properties in cryogenic conditions. For specific applications, the actual temperature limits shall be agreed upon by the manufacturer and the purchaser.  
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Note 1: See Appendix X1 for guidance on determining wind pressure resistance of panels when required for wall sheathing applications.  
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Standard Test Method for Conducting Exterior Exposure Tests of Finishes for Thermal Insulation

SIGNIFICANCE AND USE
5.1 Both physical and chemical changes possibly occur from weather exposure, and these changes affect performance properties, service life, and maintenance schedules. For this reason, tests of properties relating to performance shall be made both before and after specific periods of outdoor exposure.  
5.2 This test method recognizes that differing geographical locations, environmental conditions, differences between surface temperatures and ambient temperatures, and test durations have extremely varied effects upon the test results.  
5.3 This test method is to be used for comparative qualitative testing.
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1.1 This test method covers out-of-doors exposure testing of finishes that are normally field-applied to thermal insulation and possibly include joints or joint sealants, or both. Such exposure is essential prior to the determination of certain physical properties when the finish is to be exposed to exterior weather conditions. This test method also indicates possible compatibility problems between the joint sealant and the finish as well as the ability of the finish to span a dry joint. This test method is not intended to evaluate mildew resistance, efflorescence, or chemical resistance.  
Note 1: For testing free plastic films, see Practice D1435.  
1.2 This test method does not prescribe the method of application, test duration, or inspection intervals.  
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These test methods cover procedures for sampling and testing mastics and coatings for use as weather and vapour barrier finishes on thermal insulations and for other accessory use. Take the samples for laboratory examination from the original containers immediately after stirring to a uniform condition. Determine the number of containers sampled as required representing a shipment. Open the original containers and examine them for uniformity of contents. The procedures for determining the stability of coatings under freezing are presented in details. The paper covers the determination of the volume of volatile matter and the coverage per unit of dry film thickness of mastics and coatings. Application of the material to the test panels shall meet the requirements prescribed, or to the thickness and by the method to be followed in practice, such as spray, brush, or trowel. Test the coated panel prepared in accordance with the required method at 15-min intervals to determine the time required to set-to-touch, and at 30-min intervals to determine the time to reach practical hardness.
SCOPE
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1.2 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.  
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Section  
Sampling  
4  
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5  
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8  
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This specification covers non-metallic thermal insulation for use in contact with austenitic stainless steel piping and equipment. The material shall conform to the established requirements of the basic material specification. The physical and chemical requirements shall conform to the requirements of the basic material specification. Preproduction corrosion test and chemical analysis shall be performed to conform to the specified requirements.
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SCOPE
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3.1 Tensile strength is a fundamental property associated with mineral fiber manufacture since it is influenced by the type of fiber, the deposition of fiber, the type and the amount of bonding agent, and the method of curing the resin to form a bonded insulation product. The test is an indication of product integrity and the ability of the product to be successfully handled and applied in the field.
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1.1 This test method covers evaluation of strength in tension on mineral fiber batt- and blanket-type insulation products. It is useful for determining the comparative tensile properties of these products, specimens of which cannot be held by the more conventional clamp-type grips. This is a quality control method, and the results shall not be used for design purposes. It is not suitable for board-type products.  
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Standard Specification for Prefabricated Reflective Insulation Systems for Equipment and Pipe Operating at Temperatures above Ambient Air

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This specification covers the standard for all metal prefabricated, reflective insulation systems for equipment and piping operating at temperatures above ambient in air proposed for use in nuclear power-generating plants and industrial plants. The insulation unit is a rigid, self-contained, prefabricated metal construction made of an inner and outer casing arranged to form a rigid assembly with separated air spaces between the inner and outer casing and the individual reflective liners. The reflective insulation described herein is limited to systems of insulating units, designed to fit the equipment or piping to be insulated. The units shall be manufactured from metals that are in accordance with the thermal, physical, and chemical requirements not only of the insulation as unit, but also as an assembly of units forming the insulation system.
SCOPE
1.1 This specification covers the requirements for all metal prefabricated, reflective insulation systems for equipment and piping operating in air at temperatures above ambient. Typical applications are in nuclear power-generating plants and industrial plants.  
1.2 Reflective insulation is thermal insulation that reduces radiant heat transfer across spaces by the use of surfaces of high reflectance and low emittance.  
1.3 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.  
1.4 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.  
1.5 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.

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ASTM C585-22(Practice)
Standard Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and Tubing

SIGNIFICANCE AND USE
4.1 The purpose of this practice is to ensure satisfactory fit on standard sizes, to accommodate radial expansion of pipes and tubes which are heated after being insulated, and to minimize the number of insulation sizes and thicknesses to be manufactured and stocked.  
4.2 While it is possible to manufacturer insulation to these recommended dimensions, exercise care in attempting to nest layers of different materials, or layers supplied by different manufacturers. Individual manufacturing processes will operate at slightly different tolerances. While the product will fit the pipe, it is possible that it will not readily nest as the outer layer between the different materials, or with a different manufacturer, and possibly the same manufacturer. Exercise care to determine these differences before specifying or ordering nesting sizes.  
4.3 The wide range of outer diameter dimensional tolerances will prevent many pipe and tube insulations from nesting for staggered joints or double layered applications, or both unless specified when ordered from the manufacturer, distributor, or fabricator.  
4.4 Dimensions in accordance with this practice do not necessarily permit application of one thickness of pipe insulation over another (Nesting or Simplified Dimensional System) to obtain total thicknesses greater than those manufactured as single layer, or for multilayer application when desired.  
FIG. 3 Hinged Section Measurement Location
SCOPE
1.1 This practice is intended as a dimensional standard for preformed thermal insulation for pipes and tubing.  
1.2 This practice covers insulation supplied in cylindrical sections and lists recommended single layer inner and outer diameters of insulation having nominal wall thicknesses from 1/2 to 5 in. (13 to 127 mm) to fit over standard sizes of pipe and tubing.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values stated in SI units are provided for information only.  
1.4 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.  
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ASTM C302-13(2022)(Test Method)
Standard Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal Insulation

SIGNIFICANCE AND USE
5.1 Density measurements of preformed pipe insulation are useful in determining compliance of a product with specification limits and in providing a relative gage of product weights. For any one kind of insulation some important physical and mechanical properties, such as thermal conductivity, heat capacity, strength, etc., bear a specific relationship with its density; however, on a density basis, these properties are not directly comparable with those for other kinds of material.  
5.2 The physical dimensions of preformed pipe insulation are important quantities not only for determining the density of the pipe insulation but also for determining the conformance to specifications. The use of multilayer insulations is common, and the dimensions are necessary to ensure proper nesting of the layers.
SCOPE
1.1 This test method covers the determination of the dimensions and density, after conditioning, of preformed pipe insulation.  
1.1.1 Procedure A is applicable to sections of one-piece pipe covering or to sections of segmental pipe covering that can be joined together concentrically and measured as one-piece.  
1.1.2 Procedure B is applicable to segmental pipe covering where each section of material is measured.  
1.1.3 Procedure C is applicable to sections of one-piece pipe covering, such as soft foam or mineral wool materials, where it is possible to penetrate the material.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
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.

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