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ASTM C656-07

(Specification)

Standard Specification for Structural Insulating Board, Calcium Silicate

Standard Specification for Structural Insulating Board, Calcium Silicate

ABSTRACT
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 1700F (927C). For specific applications, the actual temperature limit shall be agreed upon between the manufacturer and the purchaser.
1.2 The structural insulating board maintains its structural integrity after immersion in water.
1.3 Rapid cycling over a wide temperature range is not recommended because of potential damage due to thermal shock.
1.4 The values stated in inch-pound units are to be regarded as the standard. The approximate SI equivalents of inch-pound units are given in parentheses.
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.
1.5 When the installation or use of thermal insulation materials, accessories and systems, may pose safety or health problems, the manufacturer shall provide the user appropriate current information regarding any known problems associated with the recommended use of the company's products, and shall also recommend protective measures to be employed in their safe utilization. The user shall establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

General Information

Status
Historical
Publication Date
31-Aug-2007
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

Replaces
ASTM C656-94a(2001) - Standard Specification for Structural Insulating Board, Calcium Silicate
Effective Date
01-Sep-2007
Replaced By
ASTM C656-07(2013) - Standard Specification for Structural Insulating Board, Calcium Silicate
Effective Date
01-Mar-2013
Referred By
ASTM C1558-19 - Standard Guide for Development of Standard Data Records for Computerization of Thermal Transmission Test Data for Thermal Insulation
Effective Date
01-Sep-2007

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ASTM C656-07 - Standard Specification for Structural Insulating Board, Calcium SilicateASTM C656-07 - Standard Specification for Structural Insulating Board, Calcium Silicate
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ASTM C656-07 - Standard Specification for Structural Insulating Board, Calcium Silicate
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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:C656 −07
StandardSpecification for
1
Structural Insulating Board, Calcium Silicate
This standard is issued under the fixed designation C656; 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.
1. Scope C165 Test Method for Measuring Compressive Properties of
Thermal Insulations
1.1 This specification covers structural insulating board for
C168 Terminology Relating to Thermal Insulation
general thermal insulating, fire-resistive, and marine bulkhead
C177 Test Method for Steady-State Heat Flux Measure-
applications.Therigid,preformedstructuralinsulatingboardis
ments and Thermal Transmission Properties by Means of
for use at temperatures up to 1700°F (927°C). For specific
the Guarded-Hot-Plate Apparatus
applications, the actual temperature limit shall be agreed upon
C203 Test Methods for Breaking Load and Flexural Proper-
between the manufacturer and the purchaser.
ties of Block-Type Thermal Insulation
1.2 The structural insulating board maintains its structural
C303 Test Method for Dimensions and Density of Pre-
integrity after immersion in water.
formed Block and Board–Type Thermal Insulation
1.3 Rapid cycling over a wide temperature range is not C356 Test Method for Linear Shrinkage of Preformed High-
Temperature Thermal Insulation Subjected to Soaking
recommended because of potential damage due to thermal
shock. Heat
C390 Practice for Sampling and Acceptance of Thermal
1.4 The values stated in inch-pound units are to be regarded
Insulation Lots
as the standard. The approximate SI equivalents of inch-pound
C411 Test Method for Hot-Surface Performance of High-
units are given in parentheses.
Temperature Thermal Insulation
1.5 This standard does not purport to address all of the
C447 Practice for Estimating the Maximum Use Tempera-
safety concerns, if any, associated with its use. It is the
ture of Thermal Insulations
responsibility of the user of this standard to establish appro-
C518 Test Method for Steady-State Thermal Transmission
priate safety and health practices and determine the applica-
Properties by Means of the Heat Flow Meter Apparatus
bility of regulatory limitations prior to use.
C1045 Practice for Calculating Thermal Transmission Prop-
1.6 When the installation or use of thermal insulation
erties Under Steady-State Conditions
materials, accessories and systems, may pose safety or health
C1058 Practice for Selecting Temperatures for Evaluating
problems, the manufacturer shall provide the user appropriate
and Reporting Thermal Properties of Thermal Insulation
current information regarding any known problems associated
D1037 Test Methods for Evaluating Properties of Wood-
with the recommended use of the company’s products, and
Base Fiber and Particle Panel Materials
shall also recommend protective measures to be employed in
E136 Test Method for Behavior of Materials in a Vertical
their safe utilization.The user shall establish appropriate safety
Tube Furnace at 750°C
and health practices and determine the applicability of regula-
tory requirements prior to use. 3. Terminology
3.1 Definitions—The definitions in Terminology C168 shall
2. Referenced Documents
apply to the terms used in this specification.
2
2.1 ASTM Standards:
4. Classification
4.1 Thestructuralinsulatingboardsshallbeofthefollowing
types:
1
This specification is under the jurisdiction of ASTM Committee C16 on
4.1.1 Type I—Maximum use temperature 1400°F (760°C).
Thermal Insulation and is the direct responsibility of Subcommittee C16.20 on
Homogeneous Inorganic Thermal Insulations.
4.1.2 Type II—Maximum use temperature 1700°F (927°C).
Current edition approved Sept. 1, 2007. Published September 2007. Originally
4.2 Thestructuralinsulatingboardsshallbeofthefollowing
approved in 1970. Last previous edition approved in C656 – 94a(2001). DOI:
10.1520/C0656-07.
grades:
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 3 3
4.2.1 Grade 1—Typical density 36 lb/ft (577 kg/m ).
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3 3
4.2.2 Grade 2—Typical density 46 lb/ft (737 kg/m ).
Standards volume information, refer to the standard’s Document Summary page on
3 3
the ASTM website. 4.2.3 Grade 3—Typical density 60 lb/ft (961 kg/m ).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C656−07
3 3
4.2.4 Grade 4—Typical density 14 lb/ft (224 kg/m ). 10. Qualification Requirements
3 3
4.2.5 Grade 5—Typical density 18 lb/ft (288 kg/m ).
10.1 Unless otherwise specified, the fol
...

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4.1 Inorganic fibrous thermal insulation can contain varying amounts of non-fibrous material. Non-fibrous material does not contribute to the insulating value of the insulation and therefore a procedure for determining that amount is desirable. Several specifications refer to shot content and percent (%) retained on various screen sizes determined by this test method.
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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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1.1 This specification covers the classification and performance of flexible aerogel thermal insulation. This will cover the range of continuous exposure operating temperatures from –321°F (–196°C) up to 1200°F (649°C).  
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ASTM C656-17(2023)(Specification)
Standard Specification for Structural Insulating Board, Calcium Silicate

ABSTRACT
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.  
1.2 The structural insulating board maintains its structural integrity after immersion in water.  
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1.6 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.  
1.7 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 C1374-18(2023)(Test Method)
Standard Test Method for Determination of Installed Thickness of Pneumatically Applied Loose-Fill Building Insulation

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5.1 This test method was designed to give the manufacturer of loose-fill insulation products a way of determining what the initial installed thickness should be in a horizontal open attic for pneumatic applications.  
5.2 The installed thickness value developed by this test method is intended to provide guidance to the installer in order to achieve a minimum mass/unit area for a given R-value.  
5.3 For the purpose of product design, testing should be done at a variety of R-values. At least three R-values should be used: the lowest R-value on the product label, the highest R-value on the product label, and an R-value near the midpoint of the R-value range.
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