ASTM D4549 - 11

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

    Active Standard ASTM D4549 | Developed by Subcommittee: D20.15

    Book of Standards Volume: 08.02


      Format Pages Price  
    PDF 5 $43.00   ADD TO CART
    Hardcopy (shipping and handling) 5 $43.00   ADD TO CART
    Standard + Redline PDF Bundle 10 $51.60   ADD TO CART


    Abstract

    This specification, which covers polystyrene materials, both crystal and rubber modified suitable for molding and extrusion, is intended to be a means of calling out plastic materials used in the fabrication of end items or parts. Polystyrene materials are classified according to classes after being grouped as crystal, rubber modified, and others. The materials are further classified according to grades after being grouped as general-purpose, other medium impact, high impact, super-high-impact, and others. The materials shall conform to the prescribed injection molded properties and natural colors.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

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

    1.2 This 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.

    1.3 The 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.

    1.4 The 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D256 Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics

    D638 Test Method for Tensile Properties of Plastics

    D648 Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position

    D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

    D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement

    D883 Terminology Relating to Plastics

    D1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer

    D1525 Test Method for Vicat Softening Temperature of Plastics

    D1600 Terminology for Abbreviated Terms Relating to Plastics

    D3892 Practice for Packaging/Packing of Plastics

    D4000 Classification System for Specifying Plastic Materials

    D5630 Test Method for Ash Content in Plastics

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E105 Practice for Probability Sampling of Materials


    ICS Code

    ICS Number Code 83.080.10 (Thermosetting materials)

    UNSPSC Code

    UNSPSC Code 13102026(Polystyrene PS)


    Referencing This Standard

    DOI: 10.1520/D4549-11

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D4549-11, Standard Classification System and Basis for Specification for Polystyrene and Rubber-Modified Polystyrene Molding and Extrusion Materials (PS), ASTM International, West Conshohocken, PA, 2011, www.astm.org

    Back to Top