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ASTM D1525-09

Historical Revision

Standard Test Method for Vicat Softening Temperature of Plastics

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1.1 This test method covers determination of the temperature at which a specified needle penetration occurs when specimens are subjected to specified controlled test conditions.

1.2 This test method is not recommended for ethyl cellulose, nonrigid poly(vinyl chloride), poly(vinylidene chloride), or other materials having a wide Vicat softening range.

1.3 The values stated in SI units are to be regarded as standard.

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 and 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 1—This test method is equivalent to ISO 306 in all sections with the exceptions of the allowance for creep, prior to the beginning of the test and the allowance of the fluidized powder as a heat transfer medium.


Data obtained by this test method is used to compare the heat-softening qualities of thermoplastic materials.

This test method is useful in the areas of quality control, development, and characterization of plastic materials.

SDO ASTM: ASTM International
Document Number D1525
Publication Date Nov. 15, 2009
Language en - English
Page Count 10
Revision Level 09
Supercedes
Committee D20.30
Publish Date Document Id Type View
Aug. 1, 2017 D1525-17E01 Revision
Aug. 1, 2017 D1525-17 Revision
Nov. 15, 2009 D1525-09 Revision
March 1, 2007 D1525-07 Revision
March 15, 2006 D1525-06 Revision
March 10, 2000 D1525-00 Revision
Not Available D1525-87 Revision