Standard Test Method for Tensile Properties of Plastics By Use of Microtensile Specimens

SCOPE
1.1 This test method covers certain material specifications for which a history of data has been obtained using the standard microtensile specimen. The specimen geometry has been changed to be equivalent to that of ISO 12086-2:1955. In general, this test method is superseded for general use by either Test Methods D 882 or Test Method D 638. The very small Type V specimen in Test Method D 638 is the recommended specimen when limited amounts of material are available.
1.2 This test method covers the determination of the comparative tensile strength and elongation properties of plastics in the form of standard microtensile test specimens when tested under defined conditions of pretreatment, temperature, humidity, and testing machine speed. It can be used for specimens of any thickness up to 3.2 mm (1/8 in.), including thin films.
1.3 This test method cannot be used for the determination of modulus of elasticity. For the determination of modulus, see Test Method D 638 or Test Methods D 882.
1.4 Test data obtained by this test method are relevant and appropriate for use in engineering design.
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—There is no equivalent or similar ISO standard.

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Publication Date
09-Aug-2002
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ASTM D1708-02a - Standard Test Method for Tensile Properties of Plastics By Use of Microtensile Specimens
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D1708–02a
Standard Test Method for
Tensile Properties of Plastics By Use of Microtensile
1
Specimens
This standard is issued under the fixed designation D 1708; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope D 882 Test Methods for Tensile Properties of Thin Plastic
2
Sheeting
1.1 This test method covers certain material specifications
2
D 883 Terminology Relating to Plastics
forwhichahistoryofdatahasbeenobtainedusingthestandard
D 4000 Classification System for Specifying Plastic Mate-
microtensile specimen. The specimen geometry has been
3
rials
changed to be equivalent to that of ISO 12086-2:1955. In
D 4066 Specification for Nylon Injection and Extrusion
general,thistestmethodissupersededforgeneralusebyeither
3
Materials
Test Methods D 882 or Test Method D 638. The very small
D 4968 Guide for Annual Review of Test Methods and
Type V specimen in Test Method D 638 is the recommended
4
Specifications for Plastics
specimen when limited amounts of material are available.
D 5947 Test Methods for Physical Dimensions of Solid
1.2 This test method covers the determination of the com-
4
Plastics Specimens
parativetensilestrengthandelongationpropertiesofplasticsin
E 691 Practice for Conducting an Interlaboratory Study to
the form of standard microtensile test specimens when tested
5
Determine the Precision of a Test Method
under defined conditions of pretreatment, temperature, humid-
2.2 ISO Standard:
ity, and testing machine speed. It can be used for specimens of
1 ISO 12086-2:1995 Plastics—Fluoropolymer Dispersion,
any thickness up to 3.2 mm ( ⁄8 in.), including thin films.
Moulding, and Extrusion Materials—Part 2 Preparation of
1.3 Thistestmethodcannotbeusedforthedeterminationof
6
Test Specimens and Determination of Properties
modulus of elasticity. For the determination of modulus, see
Test Method D 638 or Test Methods D 882.
3. Terminology
1.4 Test data obtained by this test method are relevant and
3.1 Definitions: Definitions of terms applying to this test
appropriate for use in engineering design.
method appear in Terminology D 883 and Test Method D 638,
1.5 The values stated in SI units are to be regarded as the
Annex A2.
standard. The values given in parentheses are for information
only.
4. Significance and Use
1.6 This standard does not purport to address all of the
4.1 This test method provides data for quality control and
safety concerns, if any, associated with its use. It is the
acceptance or rejection under specifications.
responsibility of the user of this standard to establish appro-
4.2 Before proceeding with this test method, reference
priate safety and health practices and determine the applica-
should be made to the ASTM specification of the material
bility of regulatory limitations prior to use.
being tested. Any test specimen preparation, conditioning,
NOTE 1—There is no equivalent or similar ISO standard.
dimensions, or testing parameters, or combination thereof,
covered in the materials specification shall take precedence
2. Referenced Documents
over those mentioned in this test method. If there are no
2.1 ASTM Standards:
material specifications, then the default conditions herein
2
D 618 Practice for Conditioning Plastics for Testing
apply. Table 1 of Classification System D 4000 lists theASTM
2
D 638 Test Method for Tensile Properties of Plastics
materials standards that currently exist.
1 3
This test method is under the jurisdiction ofASTM Committee D20 on Plastics Annual Book of ASTM Standards, Vol 08.02.
4
and is the direct responsibility of Subcommittee D20.10 on Mechanical Properties. Annual Book of ASTM Standards, Vol 08.03.
5
Current edition approved August 10, 2002. Published October 2002. Originally Annual Book of ASTM Standards, Vol 14.02.
6
published as D 1708 – 59 T. Last previous edition D 1708 – 02. Available from American National Standards Institute, 25 W. 43rd St., 4th
2
Annual Book of ASTM Standards, Vol 08.01. Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D1708–02a
TABLE 1 Tensile Strength at Break for Seven Laboratories and
6.2 All surfaces of the specimen shall be free of visible
Two Materials, MPa
flaws, scratches, or imperfections. Marks left by coarse ma-
Test
chiningoperationsshallbecarefullyremovedwithafinefileor
A B C D
Material Speed, Average S S r R
r R
abrasive, and the filed surfaces shall then be smoothed with
...

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