ASTM D6339-11(2019)
(Specification)Standard Classification System for and Basis for Specifications for Syndiotactic Polystyrene Molding and Extrusion (SPS)
Standard Classification System for and Basis for Specifications for Syndiotactic Polystyrene Molding and Extrusion (SPS)
ABSTRACT
This specification covers syndiotactic polystyrene materials including homopolymer, copolymers, blends, and impact modified, suitable for molding and extrusion. The materials are classified as follows: group 01 - homopolymer; group 02 - copolymer; group 03 - flame retardant; group 04 - blends; group 00 - others. These are further classified as class 1 - general purpose; class 2 - impact modified; and class - others. The reinforced and additive materials are as follows: carbon and graphite-reinforced, glass, mineral-reinforced, lubricants, combination of reinforcement, or fillers, or both. Materials shall be tested, test specimens shall be molded by an injection molding process, and the individual grades shall conform to specified values of tensile strength, flexural modulus, tensile modulus, deflection temperature, specific gravity, Izod impact, and ISO Charpy impact, Vicat softening point, melt flow rate.
SCOPE
1.1 This classification system covers syndiotactic polystyrene materials including homopolymer, copolymers, blends, and impact modified, suitable for molding and extrusion. Recycled product will be addressed in a separate standard.
1.2 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic materials used in fabrication of end use items or parts. It is not intended for the selection of matierials. Material selection can be made by those having expertise in the plastics field only 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 inherent properties of the material other than those covered by this classification system, and the economics.
1.3 The properties included in this classification system are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are to be called out using the suffixes given in Section 5.
Note 1: There is no known ISO equivalent to this standard.
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
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:D6339 −11 (Reapproved 2019)
Standard Classification System for and Basis for Specifications
for
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Syndiotactic Polystyrene Molding and Extrusion (SPS)
This standard is issued under the fixed designation D6339; 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* Impact Resistance of Plastics
D618 Practice for Conditioning Plastics for Testing
1.1 This classification system covers syndiotactic polysty-
D638 Test Method for Tensile Properties of Plastics
rene materials including homopolymer, copolymers, blends,
D648 Test Method for Deflection Temperature of Plastics
and impact modified, suitable for molding and extrusion.
Under Flexural Load in the Edgewise Position
Recycled product will be addressed in a separate standard.
D790 Test Methods for Flexural Properties of Unreinforced
1.2 This classification system and subsequent line callout
and Reinforced Plastics and Electrical Insulating Materi-
(specification) are intended to provide a means of calling out
als
plastic materials used in fabrication of end use items or parts.
D792 Test Methods for Density and Specific Gravity (Rela-
It is not intended for the selection of matierials. Material
tive Density) of Plastics by Displacement
selection can be made by those having expertise in the plastics
D883 Terminology Relating to Plastics
field only after careful consideration of the design and the
D1238 Test Method for Melt Flow Rates of Thermoplastics
performance required of the part, the environment to which it
by Extrusion Plastometer
will be exposed, the fabrication process to be employed, the
D1525 Test Method for Vicat Softening Temperature of
inherent properties of the material other than those covered by
Plastics
this classification system, and the economics.
D1600 Terminology forAbbreviatedTerms Relating to Plas-
1.3 The properties included in this classification system are
tics
those required to identify the compositions covered. Other
D3641 Practice for Injection Molding Test Specimens of
requirements necessary to identify particular characteristics
Thermoplastic Molding and Extrusion Materials
important to specialized applications are to be called out using
D3892 Practice for Packaging/Packing of Plastics
the suffixes given in Section 5.
D4000 Classification System for Specifying Plastic Materi-
NOTE 1—There is no known ISO equivalent to this standard.
als
D5630 Test Method for Ash Content in Plastics
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard- E29 Practice for Using Significant Digits in Test Data to
ization established in the Decision on Principles for the Determine Conformance with Specifications
Development of International Standards, Guides and Recom- 3
2.2 Military Standard:
mendations issued by the World Trade Organization Technical
MIL-STD-105 Sampling Procedure and Tables for Inspec-
Barriers to Trade (TBT) Committee.
tion by Attributes
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2.3 ISO Standards:
2. Referenced Documents
ISO 75–1 and 2 Plastics: Determination of Temperature of
2
2.1 ASTM Standards:
Deflection Under Load
D256 Test Methods for Determining the Izod Pendulum
ISO 179–1 Determination of Charpy Impact Strength—Part
1: Non-Instrumented Impact Test
ISO 306 Plastics: Thermoplastic Materials-Determination of
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ThisclassificationsystemisunderthejurisdictionofASTMCommitteeD20on
Vicat Softening Temperature (VST)
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
Materials.
Current edition approved April 1, 2019. Published May 2019. Originally
approved in 1998. Last previous edition approved in 2011 as D6339 – 11. DOI:
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10.1520/D6339-11R19. Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM dodssp.daps.dla.mil.
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Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
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