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Description of ASTM-D648 2007ASTM D648 - 07Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise PositionActive Standard ASTM D648 | Developed by Subcommittee: D20.30 Book of Standards Volume: 08.01
Translated Standard: Russian ASTM D648Significance and Use This test is particularly suited to control and development work. Data obtained by this test method may not be used to predict the behavior of plastic materials at elevated temperatures except in applications in which the factors of time, temperature, method of loading, and fiber stress are similar to those specified in this test method. The data are not intended for use in design or predicting endurance at elevated temperatures. 1. Scope 1.1 This test method covers the determination of the temperature at which an arbitrary deformation occurs when specimens are subjected to an arbitrary set of testing conditions. 1.2 This test method applies to molded and sheet materials available in thicknesses of 3 mm [1/8 in.] or greater and which are rigid or semirigid at normal temperature. Note 1Sheet stock less than 3 mm [0.125 in.] but more than 1 mm [0.040 in.] in thickness may be tested by use of a composite sample having a minimum thickness of 3 mm. The laminae must be of uniform stress distribution. One type of composite specimen has been prepared by cementing the ends of the laminae together and then smoothing the edges with sandpaper. The direction of loading shall be perpendicular to the edges of the individual laminae. 1.3 The values stated in SI units are to be regarded as standard. The values given in brackets are for information only. 1.4 Due to the potential safety and environmental hazards associated with mercury-filled thermometers, the use of alternative temperature measuring devices (such as thermocouples or RTDs) is encouraged. 1.5 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 2The test method described as a Method B of this test method, and test methods Ae and Be of ISO 75-1 and ISO 75-2, 1993, are technically equivalent.
ASTM Standards D618 Practice for Conditioning Plastics for Testing D883 Terminology Relating to Plastics D1898 Practice for Sampling of Plastics D5947 Test Methods for Physical Dimensions of Solid Plastics Specimens E1 Specification for ASTM Liquid-in-Glass Thermometers E77 Test Method for Inspection and Verification of Thermometers E608/E608M Specification for Mineral-Insulated, Metal-Sheathed Base Metal Thermocouples E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method E1137/E1137M Specification for Industrial Platinum Resistance Thermometers NIST Document NBS Special PublicatISO Standards ISO 75-2 Plastics--Determination of Temperature of Deflection Under Load--Part 2: Plastics and EboniteKeywords deflection temperature; flexural load; flexure; ICS Code ICS Number Code 83.080.01 (Plastics in general) DOI: 10.1520/D0648-07 ASTM International is a member of CrossRef. ASTM D648The following editions for this book are also available...
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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