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ASTM E793-24

Current Revision

Standard Test Method for Enthalpies of Fusion and Crystallization by Differential Scanning Calorimetry

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1.1 This test method describes the determination of the enthalpy (heat) of fusion (melting) and crystallization by differential scanning calorimetry (DSC).

1.2 This test method is applicable to solid samples in granular form or in any fabricated shape from which an appropriate specimen can be cut, or to liquid samples that crystallize within the range of the instrument. Note, however, that the results may be affected by the form and mass of the specimen, as well as by other experimental conditions.

1.3 The normal operating temperature range is from −120 °C to 600 °C. The temperature range can be extended depending upon the instrumentation used.

1.4 This test method is applicable to thermally stable materials with well-defined endothermic or exothermic behavior.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 Differential scanning calorimetry provides a rapid method for the determination of enthalpic changes accompanying first-order transitions of materials.

5.2 This test method is useful for quality control, specification acceptance, and research.

SDO ASTM: ASTM International
Document Number E793
Publication Date Sept. 1, 2024
Language en - English
Page Count 5
Revision Level 24
Supercedes
Committee E37.01
Publish Date Document Id Type View
Sept. 1, 2024 E0793-24 Revision
Sept. 1, 2006 E0793-06 Revision
May 10, 2001 E0793-95 Revision
May 10, 2001 E0793-01 Revision
April 1, 2018 E0793-06R18 Reaffirmation
Sept. 1, 2012 E0793-06R12 Reaffirmation