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ASTM E793-06(2012)

(Test Method)

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

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

SIGNIFICANCE AND USE
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.
SCOPE
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 to 600°C. The temperature range can be extended depending upon the instrumentation used.  
1.4 This test method is generally applicable to thermally stable materials with well defined endothermic or exothermic behavior.  
1.5 Computer or electronic based instruments, techniques, or data treatment equivalent to those in this test method may also be used.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 The enthalpy of melting and crystallization portion of ISO 11357-3 is equivalent to this standard.  
1.8 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.

General Information

Status
Historical
Publication Date
31-Aug-2012
ICS
17.200.10 - Heat. Calorimetry
Technical Committee
E37 - Thermal Measurements
Drafting Committee
E37.01 - Calorimetry and Mass Loss
Current Stage
Ref Project

Relations

Replaces
ASTM E793-06 - Standard Test Method for Enthalpies of Fusion and Crystallization by Differential Scanning Calorimetry
Effective Date
01-Sep-2012
Referred By
ASTM E794-06(2018) - Standard Test Method for Melting And Crystallization Temperatures By Thermal Analysis
Effective Date
01-Sep-2012
Referred By
ASTM C1784-20 - Standard Test Method for Using a Heat Flow Meter Apparatus for Measuring Thermal Storage Properties of Phase Change Materials and Products
Effective Date
01-Sep-2012
Referred By
ASTM E1231-19 - Standard Practice for Calculation of Hazard Potential Figures of Merit for Thermally Unstable Materials
Effective Date
01-Sep-2012
Referred By
ASTM E1591-20 - Standard Guide for Obtaining Data for Fire Growth Models
Effective Date
01-Sep-2012
Referred By
ASTM F1925-22 - Standard Specification for Semi-Crystalline Poly(lactide) Polymer and Copolymer Resins for Surgical Implants
Effective Date
01-Sep-2012
Referred By
ASTM F2902-16e1 - Standard Guide for Assessment of Absorbable Polymeric Implants
Effective Date
01-Sep-2012
Referred By
ASTM F3384-21 - Standard Specification for Polydioxanone Polymer Resins for Surgical Implants
Effective Date
01-Sep-2012
Referred By
ASTM D5747/D5747M-21 - Standard Practice for Tests to Evaluate the Chemical Resistance of Geomembranes to Liquids
Effective Date
01-Sep-2012
Referred By
ASTM D4591-22 - Standard Test Method for Determining Temperatures and Heats of Transitions of Fluoropolymers by Differential Scanning Calorimetry
Effective Date
01-Sep-2012
Referred By
ASTM E928-19 - Standard Test Method for Purity by Differential Scanning Calorimetry
Effective Date
01-Sep-2012
Referred By
ASTM F2625-10(2016) - Standard Test Method for Measurement of Enthalpy of Fusion, Percent Crystallinity, and Melting Point of Ultra-High-Molecular Weight Polyethylene by Means of Differential Scanning Calorimetry
Effective Date
01-Sep-2012
Referred By
ASTM F2313-18 - Standard Specification for Poly(glycolide) and Poly(glycolide-co-lactide) Resins for Surgical Implants with Mole Fractions Greater Than or Equal to 70 % Glycolide
Effective Date
01-Sep-2012
Referred By
ASTM F2150-19 - Standard Guide for Characterization and Testing of Biomaterial Scaffolds Used in Regenerative Medicine and Tissue-Engineered Medical Products
Effective Date
01-Sep-2012
Referred By
ASTM F3510-21 - Standard Guide for Characterizing Fiber-Based Constructs for Tissue-Engineered Medical Products
Effective Date
01-Sep-2012

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ASTM E793-06(2012) - Standard Test Method for Enthalpies of Fusion and Crystallization by Differential Scanning CalorimetryASTM E793-06(2012) - Standard Test Method for Enthalpies of Fusion and Crystallization by Differential Scanning Calorimetry
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ASTM E793-06(2012) - Standard Test Method for Enthalpies of Fusion and Crystallization by Differential Scanning Calorimetry
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E793 − 06 (Reapproved 2012)
Standard Test Method for
Enthalpies of Fusion and Crystallization by Differential
1
Scanning Calorimetry
This standard is issued under the fixed designation E793; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This test method describes the determination of the
enthalpy (heat) of fusion (melting) and crystallization by
2. Referenced Documents
differential scanning calorimetry (DSC).
2
2.1 ASTM Standards:
1.2 This test method is applicable to solid samples in
E473Terminology Relating to Thermal Analysis and Rhe-
granular form or in any fabricated shape from which an
ology
appropriate specimen can be cut, or to liquid samples that
E794TestMethodforMeltingAndCrystallizationTempera-
crystallize within the range of the instrument. Note, however,
tures By Thermal Analysis
that the results may be affected by the form and mass of the
E968Practice for Heat Flow Calibration of Differential
specimen, as well as by other experimental conditions.
Scanning Calorimeters
1.3 Thenormaloperatingtemperaturerangeisfrom−120to
E1142Terminology Relating to Thermophysical Properties
600°C. The temperature range can be extended depending
E1860Test Method for Elapsed Time Calibration of Ther-
upon the instrumentation used.
mal Analyzers
3
2.2 ISO Standard:
1.4 This test method is generally applicable to thermally
ISO 11357–3Plastics – Differential Scanning Calorimetry
stable materials with well defined endothermic or exothermic
(DSC)–Part3:TemperatureandEnthalpyofMeltingand
behavior.
Crystallization
1.5 Computer or electronic based instruments, techniques,
or data treatment equivalent to those in this test method may
3. Terminology
also be used.
3.1 Definitions—Specialized terms used in this test method
1.6 The values stated in SI units are to be regarded as
are defined in Terminologies E473 and E1142.
standard. No other units of measurement are included in this
standard. 4. Summary of Test Method
1.7 The enthalpy of melting and crystallization portion of
4.1 This test method involves heating (or cooling) a test
ISO 11357-3 is equivalent to this standard. specimen at a controlled rate in a controlled environment
throughthetemperatureregionoffusionorcrystallization.The
1.8 This standard does not purport to address all of the
heat flow associated with fusion, an endothermic process (and
safety concerns, if any, associated with its use. It is the
crystallization, an exothermic process), is recorded and inte-
responsibility of the user of this standard to establish appro-
grated over time. Absolute values for the enthalpy of fusion
priate safety and health practices and determine the applica-
(andenthalpyofcrystallization)orrelativevaluesforcompara-
bility of regulatory limitations prior to use.
tive purposes can thus be obtained.
1.9 This international standard was developed in accor-
dance with internationally recognized principles on standard-
NOTE 1—Melting (or crystallization) temperatures are sometimes de-
ization established in the Decision on Principles for the termined in conjunction with measurements of the enthalpy of fusion or
crystallization.ThesetemperaturevaluesmaybeobtainedbyTestMethod
Development of International Standards, Guides and Recom-
E794.
1 2
ThistestmethodisunderthejurisdictionofASTMCommitteeE37onThermal For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Measurements and is the direct responsibility of Subcommittee E37.01 on Calo- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
rimetry and Mass Loss. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Sept. 1, 2012. Published September 2012. Originally the ASTM website.
3
approved in 1981. Last previous edition approved in 2006 as E793–06. DOI: Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
10.1520/E0793-06R12. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E793 − 06 (2012)
5. Significance and Use 6.5.3 A cooling capability to hasten cool down from el-
evated temperatures, to provide constant cooling rates, or to
5.1 Differential scanning calorimetry provides a rapid
sustain an isothermal subambient temperature.
method for the determination of enthalpic changes accompa-
nying first-order transitions of materi
...

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