ASTM C547-12

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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.
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Designation:C547–11 Designation: C547 – 12
Standard Specification for
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Mineral Fiber Pipe Insulation
This standard is issued under the fixed designation C547; 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.
This standard has been approved for use by agencies of the Department of Defense.
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´ NOTE—Table 1 was editorially corrected in January 2012.
1. Scope
1.1 This specification covers mineral fiber insulation produced to form hollow cylinders for standard pipe and tubing sizes.The
mineral fiber pipe insulation may be molded or precision v-grooved, with one or more walls split longitudinally for use on pipe
temperatures up to 1400°F (760°C).
1.2 For satisfactory performance, properly installed protective vapor retarders or barriers should be used on sub-ambient
temperature applications to reduce movement of moisture through or around the insulation to the colder surface. Failure to use a
vapor barrier can lead to insulation and system damage. Refer to Practice C921 to aid material selection.
1.3 Flexible mineral fiber wrap products such as perpendicular-oriented fiber insulation rolls, non-precision or manually scored
block or board, or flexible boards or blankets used as pipe insulation, are not covered by this specification.
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 For Naval Sea Systems Command (NAVSEA) acceptance, materials must also comply with Supplemental Requirements.
See Annex A1 of this standard.
1.6 The following safety hazards caveat applies to the test methods portion, Section 11, only: 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.
2. Referenced Documents
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2.1 ASTM Standards:
C167 Test Methods for Thickness and Density of Blanket or Batt Thermal Insulations
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
C302 Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal Insulation
C335 Test Method for Steady-State Heat Transfer Properties of Pipe Insulation
C356 Test Method for Linear Shrinkage of Preformed High-Temperature Thermal Insulation Subjected to Soaking Heat
C390 Practice for Sampling and Acceptance of Thermal Insulation Lots
C411 Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation
C447 Practice for Estimating the Maximum Use Temperature of Thermal Insulations
C585 Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and Tubing
C612 Specification for Mineral Fiber Block and Board Thermal Insulation
C795 Specification for Thermal Insulation for Use in Contact with Austenitic Stainless Steel
C921 Practice for Determining the Properties of Jacketing Materials for Thermal Insulation
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
C1104/C1104M Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber Insulation
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This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.20 on Homogeneous
Inorganic Thermal Insulations.
Current edition approved June 1, 2011. Published July 2011. Originally approved in 1964. Last previous edition approved in 2007 as C547–07
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Current edition approved April 15, 2012. Published May 2012. Originally approved in 1964. Last previous edition approved in 2011 as C547 – 11 . DOI:
10.1520/C0547-11. DOI: 10.1520/C0547-12.
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volume information, refer to the standard’s Document Summary page on the ASTM website.
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