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About This Item
Full Description
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 1 - Sheet 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 2 - The 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.
Document History
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ASTM D648-18
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position- Most Recent
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ASTM D648-16
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position- Historical Version
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ASTM D648-07
viewing
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position (Withdrawn 2016)- Historical Version
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ASTM D648-06
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position- Historical Version
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ASTM D648-04
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position- Historical Version
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ASTM D648-01
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position- Historical Version
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ASTM D648-00a
Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position- Historical Version