Standard Classification System and Basis for Specification for Polystyrene and Rubber-Modified Polystyrene Molding and Extrusion Materials (PS)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

07-07-2021

Publisher

American Society for Testing and Materials

1.1This classification system covers polystyrene materials, both crystal and rubber modified, suitable for molding and extrusion.

1.2This classification system and subsequent line callout (specification) are intended to be 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 can be made by those having expertise in the plastics 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 inherent properties of the material other than those covered by this specification, and the economics.

1.3The properties included in this specification are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are to be specified using the suffixes as given in Section 5.

1.4The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

Note 1:This standard combines elements from ISO 1622-1-2 and ISO 2897-1-2, but is not equivalent to either ISO standard.

1.5This 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.

Committee	D 20
DocumentType	Standard
Pages	5
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM D 4549 : 2015

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ASTM D 1238 : 2023 : REV A	Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
ASTM E 29 : 2013 : R2019	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM D 883 : 2024	Standard Terminology Relating to Plastics
ASTM D 256 : 2023 : EDT 1	Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics
ASTM D 883 : 2022	Standard Terminology Relating to Plastics
ASTM D 883 : 2020 : REV B	Standard Terminology Relating to Plastics
ASTM D 4000 : 2023	Standard Classification System for Specifying Plastic Materials
ASTM D 256 : 2023	Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics
ASTM D 5630 : 2013	Standard Test Method for Ash Content in Plastics (Withdrawn 2022)
ASTM D 638 : 2014	Standard Test Method for Tensile Properties of Plastics
ASTM D 1600 : 2018	Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)
ASTM D 5630 : 2022	Standard Test Method for Ash Content in Plastics
ASTM D 1238 : 2020	Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
ASTM D 638 : 2022	Standard Test Method for Tensile Properties of Plastics
ASTM E 29 : 2022	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications