ASTM D6576-20

Standard Specification for Flexible Cellular Rubber Chemically Blown

ABSTRACT
This specification establishes requirements for chemically blown cellular rubber. Cellular rubber may be classified into two types: Type I which is open cell or sponge rubber and Type II which is closed cell or expanded rubber. Both types are divided into three grades: Grade A which is oil-and flame-resistant, Grade B which has no requirements for oil ,flame resistance, or low temperature, and Grade C which is low-temperature resistant. Each type and class has been divided into three different conditions. Each condition is based on a specific range of firmness as expressed by compression deflection as follows: super soft, soft, soft-medium, medium, medium-firm, and firm conditions. Several tests shall be performed in order to determine the following physical properties of cellular rubber: compression deflection, low-temperature resistance, accelerated aging, recovery, flame resistance, shrinkage, water absorption, oil aging, and color.
SCOPE
1.1 This specification establishes requirements for chemically blown cellular rubber.  
1.2 In the case of conflict between the provisions of this specification and those of detailed specifications or test methods for a particular product, the latter shall take precedence.  
1.3 Unless specifically stated otherwise, by agreement between the purchaser and the supplier, all test methods shall be performed in accordance with the test methods specified in this specification.  
1.4 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 There is no known ISO equivalent to this specification.
Note 1: This specification was revised using the updated test methods and specifications in the latest version of Specification D1056.  
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.

General Information

• Status: Published
• Publication Date: 30-Jun-2020
• ICS: 83.100 - Cellular materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.22 - Cellular Materials - Plastics and Elastomers

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:D6576 −20
Standard Specification for
1
Flexible Cellular Rubber Chemically Blown
This standard is issued under the fixed designation D6576; 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* D471 Test Method for Rubber Property—Effect of Liquids
D635 Test Method for Rate of Burning and/or Extent and
1.1 This specification establishes requirements for chemi-
Time of Burning of Plastics in a Horizontal Position
cally blown cellular rubber.
D883 Terminology Relating to Plastics
1.2 In the case of conflict between the provisions of this
D1055 SpecificationsforFlexibleCellularMaterials—Latex
3
specification and those of detailed specifications or test meth-
Foam (Withdrawn 2014)
ods for a particular product, the latter shall take precedence.
D1056 Specification for Flexible Cellular Materials—
Sponge or Expanded Rubber
1.3 Unless specifically stated otherwise, by agreement be-
tween the purchaser and the supplier, all test methods shall be E176 Terminology of Fire Standards
E177 Practice for Use of the Terms Precision and Bias in
performed in accordance with the test methods specified in this
specification. ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
1.4 The values stated in SI units are to be regarded as the
E691 Practice for Conducting an Interlaboratory Study to
standard. The inch-pound units given in parentheses are for
Determine the Precision of a Test Method
information only.
E2935 Practice for Conducting Equivalence Testing in
1.5 This standard does not purport to address all of the
Laboratory Applications
safety concerns, if any, associated with its use. It is the 4
2.2 SAE Standard:
responsibility of the user of this standard to establish appro-
SAE J 1351-1993 Hot Odor Test for Insulation Materials
priate safety, health, and environmental practices and deter-
5
2.3 Military Standards/Specifications:
mine the applicability of regulatory limitations prior to use.
MIL STD 105 Sampling Procedures and Tables for Inspec-
1.6 There is no known ISO equivalent to this specification.
tion by Attributes
NOTE 1—This specification was revised using the updated test methods
MIL STD 129 Marking for Shipment and Storage
and specifications in the latest version of Specification D1056.
MIL STD 293 Visual Inspection Guide for Cellular Rubber
1.7 This international standard was developed in accor-
Items
dance with internationally recognized principles on standard-
MIL R 6130C Standard Specification for Flexible Cellular
ization established in the Decision on Principles for the
Rubber Chemically Blown
5
Development of International Standards, Guides and Recom-
2.4 Federal Standards/Specifications:
mendations issued by the World Trade Organization Technical
PPP-B576 Box, Wood, Cleated, Veneer, Paper Overlaid
Barriers to Trade (TBT) Committee.
PPP-B591 Box, Fiberboard, Wood-Cleated
PPP-B601 Box, Wood, Cleated Plywood
2. Referenced Documents
PPP-B621 Box, Wood, Nailed and Lock-Corner
2
2.1 ASTM Standards:
PPP-B636 Box, Shipping, Fiberboard
D297 Test Methods for Rubber Products—ChemicalAnaly-
sis
3. Terminology
3.1 Terms used in this standard are defined in accordance
1
This specification is under the jurisdiction of ASTM Committee D20 on
with Terminology D883, unless otherwise specified. For terms
Plastics and is the direct responsibility of Subcommittee D20.22 on Cellular
Materials - Plastics and Elastomers.
Current edition approved July 1, 2020. Published July 2020. Originally approved
3
in 2000. Last previous edition approved in 2013 as D6576 - 13. DOI: 10.1520/ The last approved version of this historical standard is referenced on
D6576-20. www.astm.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Society of Automotive Engineers (SAE), 400 Commonwealth
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Dr., Warrendale, PA 15096-0001, http://www.sae.org.
5
Standards volume information, refer to the standard’s Document Summary page on AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
the ASTM website. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Pag
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
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.
Designation: D6576 − 13 D6576 − 20
Standard Specification for
1
Flexible Cellular Rubber Chemically Blown
This standard is issued under the fixed designation D6576; 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*
1.1 This specification establishes requirements for chemically blown cellular rubber.
1.2 In the case of conflict between the provisions of this specification and those of detailed specifications or test methods for
a particular product, the latter shall take precedence.
1.3 Unless specifically stated otherwise, by agreement between the purchaser and the supplier, all test methods shall be
performed in accordance with the test methods specified in this specification.
1.4 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for
information only.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.6 There is no known ISO equivalent to this specification.
NOTE 1—This specification was revised using the updated test methods and specifications in the latest version of Specification D1056.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D297 Test Methods for Rubber Products—Chemical Analysis
D471 Test Method for Rubber Property—Effect of Liquids
D635 Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position
D883 Terminology Relating to Plastics
3
D1055 Specifications for Flexible Cellular Materials—Latex Foam (Withdrawn 2014)
D1056 Specification for Flexible Cellular Materials—Sponge or Expanded Rubber
E176 Terminology of Fire Standards
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E2935 Practice for Conducting Equivalence Testing in Laboratory Applications
4
2.2 SAE Standard:
SAE J 1351-1993 Hot Odor Test for Insulation Materials
1
This specification is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.22 on Cellular Materials - Plastics
and Elastomers.
Current edition approved Nov. 15, 2013July 1, 2020. Published December 2013July 2020. Originally approved in 2000. Last previous edition approved in 20072013 as
D6576 - 07.D6576 - 13. DOI: 10.1520/D6576-13.10.1520/D6576-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D6576 − 20
5
2.3 Military Standards/Specifications:
MIL STD 105 Sampling Procedures and Tables for Inspection by Attributes
MIL STD 129 Marking for Shipment and Storage
MIL STD 293 Visual Inspection Guide for Cellular Rubber Items
MIL R 6130C Standard Specification for Flexible Cellular Rubber Chemically Blown
5
2.4 Federal Standards/Specifications:
PPP-B576 Box, Wood, Cleated, Veneer, Paper Overlaid
PPP-B591 Box, Fiberboard, Wood-Cleated
PPP-B601 Box, Wood, Cleated Plywood
PPP-B621 Box, Wood, Nailed and Lock-Corner
PPP-B636 Box, Shipping, Fiberboard
3. Terminology
3.1 For defin
...