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ASTM E2092-03

(Test Method)

Standard Test Method for Distortion Temperature in Three-Point Bending by Thermomechanical Analysis

Standard Test Method for Distortion Temperature in Three-Point Bending by Thermomechanical Analysis

SCOPE
1.1 This test method describes the determination of the temperature at which the specific modulus of a test specimen is realized by deflection in three-point bending. This temperature is identified as the distortion temperature measured. The distortion temperature is that temperature at which a test specimen of defined geometry deforms to a level of strain under applied stress of 0.455 and 1.82 MPa (66 and 264 psi) equivalent to those used in Test Method D 648. The test may be performed over the range of temperature from ambient to 300C.Note 1
Results may or may not agree with those obtained by Test Method D 648.
1.2 Electronic instrumentation or automated data analysis and reduction systems or treatments equivalent to this test method may be used.Note 2
Since all electronic data treatments are not equivalent, the user shall verify equivalency to this test method.
1.3 SI values are to be regarded as the standard. Inch-pound units in parentheses are for information only.
1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.
1.5 There is no ISO standard equivalent to this test method.

General Information

Status
Historical
Publication Date
09-May-2000
ICS
83.080.01 - Plastics in general
Technical Committee
E37 - Thermal Measurements
Drafting Committee
E37.10 - Fundamental, Statistical and Mechanical Properties
Current Stage
Ref Project

Relations

Replaces
ASTM E2092-00 - Standard Test Method for Distortion Temperature in Three-Point Bending by Thermomechanical Analysis
Effective Date
10-May-2000
Replaced By
ASTM E2092-04 - Standard Test Method for Distortion Temperature in Three-Point Bending by Thermomechanical Analysis
Effective Date
01-Mar-2004
Referred By
ASTM E2769-22 - Standard Test Method for Elastic Modulus by Thermomechanical Analysis Using Three-Point Bending and Controlled Rate of Loading
Effective Date
10-May-2000

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ASTM E2092-03 - Standard Test Method for Distortion Temperature in Three-Point Bending by Thermomechanical Analysis
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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: E 2092 – 03
Standard Test Method for
Distortion Temperature in Three-Point Bending by
1
Thermomechanical Analysis
This standard is issued under the fixed designation E 2092; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 1363 Test Method for Temperature Calibration of Ther-
3
momechanical Analyzers
1.1 This test method describes the determination of the
temperature at which the specific modulus of a test specimen is
3. Terminology
realized by deflection in three-point bending. This temperature
3.1 Definitions—Specific technical terms used in this stan-
is identified as the distortion temperature measured. The
dard are defined in Terminologies E 473 and E 1142.
distortion temperature is that temperature at which a test
3.1.1 distortion temperature [°C], n—the temperature at
specimen of defined geometry deforms to a level of strain
which an arbitrary strain level is obtained in three-point
under applied stress of 0.455 and 1.82 MPa (66 and 264 psi)
bending under an arbitrary load.
equivalent to those used in Test Method D 648. The test may be
3.1.2 strain, r [mm/m], n—the dimension change in normal-
performed over the range of temperature from ambient to
izing dimension due to an applied force.
300°C.
2
3.1.3 stress, S [Pa = N/m ], n—force per unit area.
NOTE 1—Results may or may not agree with those obtained by Test
Method D 648.
4. Summary of Test Method
1.2 Electronic instrumentation or automated data analysis
4.1 A test specimen of known dimensions is tested in
and reduction systems or treatments equivalent to this test three-point bending mode. A known stress is applied to the
method may be used.
center of a test specimen supported near its ends, as it is heated
at a constant rate from ambient temperature to the upper
NOTE 2—Since all electronic data treatments are not equivalent, the
temperature limit for the material. The deflection of the test
user shall verify equivalency to this test method.
specimen is recorded as a function of temperature. The
1.3 SI values are the standard.
temperature at which a predetermined level of strain is ob-
1.4 This standard does not purport to address all of the
served in the test specimen is analyzed as the distortion
safety problems, if any, associated with its use. It is the
temperature.
responsibility of the user of this standard to establish appro-
priate safety and health practices and to determine the
5. Significance and Use
applicability of regulatory limitations prior to use.
5.1 Data obtained by this test method shall not be used to
1.5 There is no ISO standard equivalent to this test method.
predict the behavior of materials at elevated temperatures
except in applications in which the conditions of time, tem-
2. Referenced Documents
perature, method of loading, and stress are similar to those
2.1 ASTM Standards:
specified in the test.
D 648 Test Method for Deflection Temperature of Plastics
5.2 This standard is particularly suited for quality control
2
Under Flexural Load
and development work. The data are not intended for use in
3
E 473 Terminology Relating to Thermal Analysis
design or predicting endurance at elevated temperatures.
E 1142 Terminology Relating to Thermophysical Proper-
3
ties
6. Apparatus
6.1 A thermomechanical analyzer consisting of:
6.1.1 Rigid Specimen Holder, of inert, low expansivity
1
This test method is under the jurisdiction of Committee E37 on Thermal
-1 -1
material <20 μm m ·°C to center the specimen in the furnace
Measurements and is the direct responsibility of Subcommittee E37.01 on Test
Methods and Recommended Practices.
and to fix the specimen to mechanical ground.
Current edition approved April 10, 2003. Published June 2003. Originally
6.1.2 Flexure Fixture, of inert, low expansivity material <20
approved in 2000. Last previous edition approved in 2000 as E2092–00.
-1 -1
2
μm m ·°C , to support the test specimen in a three-point
Annual Book of ASTM Standards, Vol 08.01.
3
Annual Book of ASTM Standards, Vol 14.02. bending mode (see Fig. 1).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E2092–03
7. Hazards
7.1 Toxic or corrosive effluents, or both, may be released
when heating some materials and could be harmful to person-
nel and to apparatus.
7.2 Because the specimen size is small, care must be taken
to ensure that each specimen is homogeneous and representa-
tive of the sample as a whole.
7.3 The test specimen shall be isotropic. See 8.3.
8. Sampling
8.1 The specimens may be
...

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Standard Test Method for Distortion Temperature in Three-Point Bending by Thermomechanical Analysis

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1.1 This terminology covers definitions of technical terms used in the plastics industry. Terms that are generally understood or adequately defined in other readily available sources are not included.  
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1.1 This test method outlines the use of dynamic mechanical instrumentation for determining and reporting the viscoelastic properties of thermoplastic and thermosetting resins as well as composite systems in the form of cylindrical specimens molded directly or cut from sheets, plates, or molded shapes. The compression data generated is used to identify the thermomechanical properties of a plastics material or composition using a variety of dynamic mechanical instruments.  
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1.5 This test method also provides for testing flexible sheet or film materials, while supported vertically.  
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1.8 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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1.10 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.
Note 2: This test method and ISO 4589-2 are technically equivalent when using the gas measurement and control device described in 6.3.1, with direct oxygen concentration measurement.  
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