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ASTM C533-17(2023)

(Specification)

Standard Specification for Calcium Silicate Block and Pipe Thermal Insulation

Standard Specification for Calcium Silicate Block and Pipe Thermal Insulation

ABSTRACT
This specification covers calcium silicate block and pipe thermal insulation for use on surfaces. Thermal insulation shall be of the following types: Type I; Type IA; and Type II. Calcium silicate thermal insulation shall consist principally of hydrous calcium silicate usually with the incorporation of fibrous reinforcement. The insulation shall conform to the physical requirements specified. Following test methods shall be performed: block insulation; pipe insulation; apparent thermal conductivity; linear shrinkage after heat soaking; flexural strength; compressive strength; mass loss by tumbling; hot surface performance; surface burning characteristics; stress corrosion performance; and moisture content by dry weight.
SCOPE
1.1 This specification covers calcium silicate block and pipe thermal insulation for use on surfaces with temperatures between 80 and 1700°F (27 to 927°C), unless otherwise agreed upon between the manufacturer and the purchaser.  
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.  
1.3 The following safety hazards caveat pertains only to the test method (Section 12) described in this specification: 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
28-Feb-2023
ICS
91.100.60 - Thermal and sound insulating materials
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.20 - Homogeneous Inorganic Thermal Insulations
Current Stage
Ref Project

Relations

Refers
ASTM C421-08(2020) - Standard Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal Insulation
Effective Date
01-Mar-2020

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ASTM C533-17(2023) - Standard Specification for Calcium Silicate Block and Pipe Thermal InsulationASTM C533-17(2023) - Standard Specification for Calcium Silicate Block and Pipe Thermal Insulation
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ASTM C533-17(2023) - Standard Specification for Calcium Silicate Block and Pipe Thermal Insulation
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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: C533 − 17 (Reapproved 2023)
Standard Specification for
1
Calcium Silicate Block and Pipe Thermal Insulation
This standard is issued under the fixed designation C533; 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 U.S. Department of Defense.
1. Scope ties of Block-Type Thermal Insulation
C302 Test Method for Density and Dimensions of Pre-
1.1 This specification covers calcium silicate block and pipe
formed Pipe-Covering-Type Thermal Insulation
thermal insulation for use on surfaces with temperatures
C303 Test Method for Dimensions and Density of Pre-
between 80 and 1700°F (27 to 927°C), unless otherwise agreed
formed Block and Board–Type Thermal Insulation
upon between the manufacturer and the purchaser.
C335 Test Method for Steady-State Heat Transfer Properties
1.2 The values stated in inch-pound units are to be regarded
of Pipe Insulation
as standard. The values given in parentheses are mathematical
C356 Test Method for Linear Shrinkage of Preformed High-
conversions to SI units that are provided for information only
Temperature Thermal Insulation Subjected to Soaking
and are not considered standard.
Heat
1.3 The following safety hazards caveat pertains only to the
C390 Practice for Sampling and Acceptance of Thermal
test method (Section 12) described in this specification: This Insulation Lots
standard does not purport to address all of the safety concerns,
C411 Test Method for Hot-Surface Performance of High-
if any, associated with its use. It is the responsibility of the user Temperature Thermal Insulation
of this standard to establish appropriate safety, health, and
C421 Test Method for Tumbling Friability of Preformed
environmental practices and determine the applicability of Block-Type and Preformed Pipe-Covering-Type Thermal
regulatory limitations prior to use.
Insulation
1.4 This international standard was developed in accor- C446 Test Method for Breaking Load and Calculated Modu-
dance with internationally recognized principles on standard-
lus of Rupture of Preformed Insulation for Pipes (With-
3
ization established in the Decision on Principles for the drawn 2002)
Development of International Standards, Guides and Recom-
C518 Test Method for Steady-State Thermal Transmission
mendations issued by the World Trade Organization Technical
Properties by Means of the Heat Flow Meter Apparatus
Barriers to Trade (TBT) Committee. C585 Practice for Inner and Outer Diameters of Thermal
Insulation for Nominal Sizes of Pipe and Tubing
2. Referenced Documents
C795 Specification for Thermal Insulation for Use in Con-
2
tact with Austenitic Stainless Steel
2.1 ASTM Standards:
C870 Practice for Conditioning of Thermal Insulating Ma-
C165 Test Method for Measuring Compressive Properties of
terials
Thermal Insulations
C1045 Practice for Calculating Thermal Transmission Prop-
C168 Terminology Relating to Thermal Insulation
erties Under Steady-State Conditions
C177 Test Method for Steady-State Heat Flux Measure-
C1058 Practice for Selecting Temperatures for Evaluating
ments and Thermal Transmission Properties by Means of
and Reporting Thermal Properties of Thermal Insulation
the Guarded-Hot-Plate Apparatus
C1114 Test Method for Steady-State Thermal Transmission
C203 Test Methods for Breaking Load and Flexural Proper-
Properties by Means of the Thin-Heater Apparatus
C1616 Test Method for Determining the Moisture Content
1
This specification is under the jurisdiction of ASTM Committee C16 on
of Organic and Inorganic Insulation Materials by Weight
Thermal Insulation and is the direct responsibility of Subcommittee C16.20 on
C1617 Practice for Quantitative Accelerated Laboratory
Homogeneous Inorganic Thermal Insulations.
Evaluation of Extraction Solutions Containing Ions
Current edition approved March 1, 2023. Published March 2023. Originally
Leached from Thermal Insulation on Aqueous Corrosion
approved in 1964 to replace C344 and C345. Last previous edition approved in 2017
as C533 – 17. DOI: 10.1520/C0533-17R23.
of Metals
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr
...

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5.1 Research has demonstrated that in addition to the halide ion chloride; fluoride ions, when deposited and concentrated on the surface of austenitic stainless steel, can contribute to external stress corrosion cracking (ESCC) in the absence of inhibiting ions.5 Two widely used insulation specifications that are specific to ESCC allow the use of the same Test Methods C692 and C871 for evaluation of insulation materials. Both specifications require fluoride ions to be included with chloride ions when evaluating the extractable ions.  
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SCOPE
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This specification covers structural insulating board for general thermal insulating, fire-resistive, and marine bulkhead applications. The structural insulating boards shall be of the following types and grades: Types I and II and Grades 1; 2; 3; 4; 5; 6; 7; and 8. Calcium silicate structural insulating board shall be composed of hydrated calcium silicate with natural or man-made fibers or fillers, or a combination thereof. The following test methods shall be performed: dimensions and density; flexural strength; compressive strength; screw holding strength; apparent thermal conductivity; combustion characteristics; and maximum use temperatures.
SCOPE
1.1 This specification covers structural insulating board for general thermal insulating, fire-resistive, and marine bulkhead applications. The rigid, preformed structural insulating board is for use at temperatures up to 1700°F (927°C). For specific applications, the actual temperature limit shall be agreed upon between the manufacturer and the purchaser.  
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