Designation: D 4000 - 00 An American National Standard Standard Classification System for Specifying Plastic Materials1 This standard is issued under the fixed designation D 4000; the number immediately fllowing the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Anumber in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. 1. Scope bility of regulatory limitations prior to use. 1.1 This standard provides a classification system for tabu- 2. Referenced Documents lating the properties of unfilled, filled, and reinforced plastic materials suitable for processing into parts. 2.1 ASTM Standards: D 149 Test Methods for Dielectric Breakdown Voltage and NoTe 1-The classification system may serve many of the needs of Dielectric Strength of Solid Electrical Insulating Materials industries using plastic materials. The standard is subject to revision as the at Commercial Power Frequencies? need requires; therefore, the latest revision should always be used. D150Test Methods forA-CLoss Characteristics and 1.2 The classification system and subsequent line callout Permittivity (Dielectric Constant) of Solid Electrical Insu- (specification)isintendedtobeameansofidentifyingplastic lating Materials? materials used in the fabrication of end items or parts. It is not D 256 Test Method for Determining the Pendulum Impact intended for the selection of materials. Material selection Resistance of Notched Specimens of Plastics3 should be made by those having expertise in the plastics field D 257 Test Methods for D-C Resistance or Conductance of after careful consideration of the design and the performance Insulating Materials? required of the part, the environment to which it will be D 395 Test Methods for Rubber Property-Compression exposed, the fabrication process to be employed, the inherent Set4 properties of the material not covered in this document, and the D 471 Test Method for Rubber Property-Effect of Liq- economic factors. uids4 1.3 This classification system is based on the premise that D 412 Test Methods for Vulcanized Rubber and Thermo- plastic materials can be arranged into broad generic families plastic Rubbers and Thermoplastic Elastomers—Tension4 using basic properties to arrange the materials into groups, D 495 Test Method for High-Voltage, Low-Current, Dry classes, and grades. A system is thus established which, Arc Resistance of Solid Electrical Insulation? together with values describing additional requirements, per- D 569 Method for Measuring the Flow Properties of Ther- mits as complete a description as desired of the selected moplastic Molding Materials material. D 570 Test Method for Water Absorption of Plastics3 1.4 In all cases where the provisions of this classification D 573 Test Method for Rubber-Deterioration in an Air system would conflict with the referenced ASTM specification Oven4 for aparticularmaterial,thelatter shalltakeprecedence D 575 Test Methods for Rubber Properties in Compression4 Noe 2When using this classification system the two-letter, three- D618 Practice for Conditioning Plastics and Electrical digit suffix system applies. Insulating Materials for Testing3 NoTe 3When a material is used to fabricate a part where the D 621 Test Methods for Deformation of Plastics Under requirements are too specific for a broad material callout, it is advisable Load5 for the user to consult the supplier to secure callout of theproperties to suit D624 Test Method for Tear Strength of Conventional the actual conditions to which the part is to be subjected. Vulcanized Rubber and Thermoplastic Elastomers4 1.5 This standard does not purport to address all of the D 635 Test Method for Rate of Burning and/or Extent and safety concerns, if any, associated with its use. It is the Time of Burning of