ASTM D8156-18
(Specification)Standard Classification System for and Basis of Specifications for Thermoplastic Elastomer Copolyester Molding and Extrusion Materials (TPC)
Standard Classification System for and Basis of Specifications for Thermoplastic Elastomer Copolyester Molding and Extrusion Materials (TPC)
SCOPE
1.1 This classification system covers segmented block copolyester elastomers suitable for molding and extrusion.
1.2 This classification system allows for the use of segmented block copolyesther elastomers that are recycled provided that the requirements as stated in this classification system are met. The proportions of recycled material used, as well as the nature and amount of any contaminant, however, cannot be covered practically in this specification.
1.3 The properties included in this classification system are those required to identify the compositions covered. It is possible that there are other requirements necessary to identify particular characteristics important to specialized applications. One way of specifying them is by using the suffixes as given in Section 5.
1.4 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection is best made by those having expertise in the plastic field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered by this classification system.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 The following precautionary caveat pertains only to the test methods portion, Section 11, of this classification system. 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.
Note 1: This standard, ISO 14910-1, and ISO 14910-2 address the same subject matter, but differ in technical content.
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
Relations
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:D8156 −18
Standard Classification System for and Basis of Specifications
for
Thermoplastic Elastomer Copolyester Molding and
1
Extrusion Materials (TPC)
This standard is issued under the fixed designation D8156; 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 health, and environmental practices and determine the appli-
cability of regulatory limitations prior to use.
1.1 This classification system covers segmented block co-
polyester elastomers suitable for molding and extrusion.
NOTE 1—This standard, ISO 14910-1, and ISO 14910-2 address the
same subject matter, but differ in technical content.
1.2 This classification system allows for the use of seg-
1.7 This international standard was developed in accor-
mented block copolyesther elastomers that are recycled pro-
dance with internationally recognized principles on standard-
vided that the requirements as stated in this classification
ization established in the Decision on Principles for the
system are met. The proportions of recycled material used, as
Development of International Standards, Guides and Recom-
well as the nature and amount of any contaminant, however,
mendations issued by the World Trade Organization Technical
cannot be covered practically in this specification.
Barriers to Trade (TBT) Committee.
1.3 The properties included in this classification system are
those required to identify the compositions covered. It is
2. Referenced Documents
possible that there are other requirements necessary to identify
2.1 ASTM Standards:
particular characteristics important to specialized applications.
D618 Practice for Conditioning Plastics for Testing
One way of specifying them is by using the suffixes as given in
D883 Terminology Relating to Plastics
Section 5.
D1600 Terminology forAbbreviatedTerms Relating to Plas-
1.4 This classification system and subsequent line callout tics
(specification) are intended to provide a means of calling out
D2240 Test Method for Rubber Property—Durometer Hard-
plastic materials used in the fabrication of end items or parts. ness
It is not intended for the selection of materials. Material D3418 Test Method for Transition Temperatures and En-
selection is best made by those having expertise in the plastic thalpies of Fusion and Crystallization of Polymers by
field after careful consideration of the design and the perfor- Differential Scanning Calorimetry
mance required of the part, the environment to which it will be D3641 Practice for Injection Molding Test Specimens of
exposed, the fabrication process to be employed, the costs Thermoplastic Molding and Extrusion Materials
involved, and the inherent properties of the material other than D3892 Practice for Packaging/Packing of Plastics
those covered by this classification system. D4000 Classification System for Specifying Plastic Materi-
als
1.5 The values stated in SI units are to be regarded as
D7209 Guide for Waste Reduction, Resource Recovery, and
standard. No other units of measurement are included in this
Use of Recycled Polymeric Materials and Products (With-
standard.
2
drawn 2015)
1.6 The following precautionary caveat pertains only to the
E29 Practice for Using Significant Digits in Test Data to
test methods portion, Section 11, of this classification system.
Determine Conformance with Specifications
This standard does not purport to address all of the safety
2.2 ISO Standards:
concerns, if any, associated with its use. It is the responsibility
ISO 294-1 Plastics—Injection Moulding of Test Specimens
of the user of this standard to establish appropriate safety,
of Thermoplastic Materials—Part 1: General Principles
and Moulding of Multipurpose and Bar Test Specimens
ISO 868 Plastics and Ebonite-Determination of Indentation
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics Hardness by Means of a Durometer (Shore Hardness)
and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materi-
als.
2
Current edition approved June 1, 2018. Published July 2018. DOI:10.1520/ The last approved version of this historical standard is referenced on
D8156-18. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D8156−18
ISO 1133 Plastics-Determination of the Melt Mass-Flow
TABLE A Reinforcements and Lubricants
Symbol Material Toleranc
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