ASTM C578-03a

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Designation: C 578 – 03a
Standard Specification for
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Rigid, Cellular Polystyrene Thermal Insulation
This standard is issued under the fixed designation C 578; 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 C 165 Test Method for Measuring Compressive Properties
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of Thermal Insulations
1.1 This specification covers the types, physical properties,
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C 168 Terminology Relating to Thermal Insulation
and dimensions of cellular polystyrene intended for use as
C 177 Test Method for Steady-State Heat Flux Measure-
thermal insulation for temperatures from − 65 to + 165°F
ments and Thermal Transmission Properties by Means of
(−53.9 to + 73.9°C).
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the Guarded-Hot-Plate Apparatus
1.1.1 For Type XIII only, this specification covers the
C 203 Test Methods for Breaking Load and Flexural
physical properties, and dimensions of cellular polystyrene
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Properties of Block-Type Thermal Insulation
intended for use as thermal insulation for temperatures from
C 272 Test Method for Water Absorption of Core Materials
−297 to +165°F (−183 to +73.9°C).
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for Structural Sandwich Constructions
1.2 Consult the manufacturer for specific recommendations
C 303 Test Method for Dimensions and Density of Pre-
and properties in cryogenic conditions.
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formed Block-Type Thermal Insulation
1.2.1 This specification does not cover cryogenic properties
C 335 Test Method for Steady-State Heat Transfer Proper-
except for the k-factors for Type XIII in Appendix X1. For
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ties of Horizontal Pipe
Type XIII in specific cryogenic applications, the manufacturer
C 390 Criteria for Sampling and Acceptance of Preformed
and purchaser shall agree upon the actual temperature limits
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Thermal Insulation Lots
and physical property requirements in addition to the k-factors
C 518 Test Method for Steady-State Thermal Transmission
in Appendix X1.
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Properties by Means of the Heat Flow Meter Apparatus
1.3 The use of thermal insulation materials covered by this
C 550 Test Method for Measuring Trueness and Squareness
specification may be regulated by building codes that address
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of Rigid Block and Board Thermal Insulation
fire performance. For some end uses, specifiers should also
C 870 Practice for Conditioning of Thermal Insulating Ma-
address the effect of moisture. Guidelines regarding these end
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terials
use considerations are included in Appendix X1.
C 1045 Practice for Calculating Thermal Transmission
1.4 The values stated in inch-pound units are to be regarded
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Properties Under Steady-State Conditions
as the standard. The values given in parentheses are provided
C 1058 Practice for Selecting Temperatures for Evaluating
for information only.
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and Reporting Thermal Properties of Thermal Insulation
1.5 This standard does not purport to address all of the
C 1114 Test Method for Steady-State Thermal Transmission
safety concerns, if any, associated with its use. It is the
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Properties by Means of the Thin-Heater Apparatus
responsibility of the user of this standard to establish appro-
C 1303 Test Method for Estimating the Long-Term Change
priate safety and health practices and determine the applica-
in the Thermal Resistance of Unfaced Rigid Closed Cell
bility of regulatory limitations prior to use.
Plastic Foams by Slicing and Scaling Under Controlled
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2. Referenced Documents Laboratory Conditions
C 1363 Test Method for the Thermal Performance of Build-
2.1 ASTM Standards:
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ing Assemblies by Means of a Hot Box Apparatus
D 1600 Terminology for Abbreviated Terms Relating to
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This specification is under the jurisdiction of ASTM Committee C16 on
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Plastics
Thermal Insulation and is the direct responsibility of Subcommittee C 16.22 on
D 1621 Test Method for Compressive Properties of Rigid
Organic and Nonhomogeneous Inorganic Thermal Insulations.
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Current edition approved July 10, 2003. Published September 2003. Originally
Cellular Plastics
approved in 1965. Last previous edition approved in 2003 as C 578 – 03.
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This specification is similar to ISO 4898-1984, “Cellular Plastics—
Specification for Rigid Cellular Materials Used in the Thermal Insulation of
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Buildings,” in title only. The scope and technical content are significantly different. Annual Book of ASTM Standards, Vol 04.06.
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ISO standards are available from ANSI, 11 W. 42nd St., 13th Floor, New York, Annual Book of ASTM Standards, Vol 15.03.
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NY 10036. Annual Book of ASTM Standards, Vol 08.01.
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