ASTM D6457 - 08(2013)

    Standard Specification for Extruded and Compression Molded Rod and Heavy-Walled Tubing Made from Polytetrafluoroethylene (PTFE)

    Active Standard ASTM D6457 | Developed by Subcommittee: D20.15

    Book of Standards Volume: 08.03


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    Abstract

    This specification covers the requirements for extruded- and compression-molded rod and heavy-walled tubing made from polytetrafluoroethylene (PTFE). Material covered by this specification is classified according to type (unfilled PTFE or other PTFE), grade (Grades 1 and 2, differentiated by means of the raw material used), and class (Class 1, 2, or 3, based on property requirements). The type, grade, and class may be further differentiated according to dimensional stability and internal defect requirements. The rod and heavy-walled tubing shall be manufactured from PTFE or recycled plastics in accordance with good commercial practice, with the color, finish, and internal defects of the PTFE products in conformity with the requirements specified. Visual inspection, examination for internal defects, and tests for specific gravity, tensile strength, elongation, dielectric strength, and melting point shall be performed and shall conform to the requirements specified.

    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 specification is intended to be a means of calling out plastic product used in the fabrication of end items or parts.

    1.2 This specification covers requirements and test methods for the material, dimensions, and workmanship, and the properties of extruded- and compression-molded rod, and heavy-walled tube manufactured from granular unfilled PTFE resin in accordance with Specification D4894.

    1.3 This specification covers rod and heavy-walled tubing made wholly from polytetrafluoroethylene and produced in accordance with good commercial practice.

    1.4 The properties included in this specification are those required for the compositions covered. Requirements necessary to identify particular characteristics important to specialized applications are described by using the classification system given in Section 4.

    1.5 This specification allows for the use of recycled plastics as defined in Guide D7209.

    1.6 The values stated in inch-pound units are to be regarded as the standard in all property and dimensional tables.

    1.7 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 and health practices and determine the applicability of regulatory limitations prior to use.

    Note 1Although this specification and ISO 13000-1 and ISO 13000-2 differ in approach or detail, data obtained using either are technically equivalent.


    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

    D374 Test Methods for Thickness of Solid Electrical Insulation

    D638 Test Method for Tensile Properties of Plastics

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

    D883 Terminology Relating to Plastics

    D1600 Terminology for Abbreviated Terms Relating to Plastics

    D1708 Test Method for Tensile Properties of Plastics by Use of Microtensile Specimens

    D3892 Practice for Packaging/Packing of Plastics

    D4000 Classification System for Specifying Plastic Materials

    D4591 Test Method for Determining Temperatures and Heats of Transitions of Fluoropolymers by Differential Scanning Calorimetry

    D4894 Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials

    D7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products

    E94 Guide for Radiographic Examination

    ISO Standard

    ISO13000-1 Plastics--Polytetrafluoroethylene (PTFE) Semi-Finished Products--Part I: Requirements and Designation

    ISO13000-2 Plastics--Polytetrafluoroethylene (PTFE) Semi-Finished Products--Part II: Preparation of Test Specimens and Determination of Properties


    ICS Code

    ICS Number Code 83.140.30 (Plastic pipes and fittings for non-fluid use)

    UNSPSC Code

    UNSPSC Code 13102008(Fluoropolymers PTFE)


    DOI: 10.1520/D6457-08R13

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