ASTM E8-01e2
(Test Method)Standard Test Methods for Tension Testing of Metallic Materials
Standard Test Methods for Tension Testing of Metallic Materials
SCOPE
1.1 These test methods cover the tension testing of metallic materials in any form at room temperature, specifically, the methods of determination of yield strength, yield point elongation, tensile strength, elongation, and reduction of area.
Note 1—A complete metric companion to Test Methods E 8 has been developed, therefore, no metric equivalents are shown in these test methods. Committee E28 was granted an exception in 1997 by the Committee on Standards to maintain E8 and E8M as separate companion standards rather than combining standards as recommended by the Form and Style Manual.
Note 2—Gage lengths in these test methods are required to be 4D for most round specimens. Test specimens made from powder metallurgy (P/M) materials are exempt from this requirement by industry-wide agreement to keep the pressing of the material to a specific projected area and density.
Note 3—Exceptions to the provisions of these test methods may need to be made in individual specifications or test methods for a particular material. For examples, see Test Methods and Definitions A 370 and Test Methods B 557.
Note 4—Room temperature shall be considered to be 50 to 100°F unless otherwise specified.
1.2 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.
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American Association State
e2
Designation:E8–01
Highway and Transportation Officials Standard
AASHTO No.: T68
Standard Test Methods for
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Tension Testing of Metallic Materials
This standard is issued under the fixed designation E 8; 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.
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e NOTE—Sections 3.1.5, 7.2.2, 7.9.2, 7.9.3.2 and the caption of Fig. 27 were editorially revised in April 2002.
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e NOTE—The terms Discontinuous Yielding,Lower Yield Strength, Upper Yield Strength, and Yield Point Elongation were
editorially revised in October 2002.
1. Scope * A 370 Test Methods and Definitions for Mechanical Testing
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of Steel Products
1.1 These test methods cover the tension testing of metallic
B 557 Test Methods of Tension Testing Wrought and Cast
materials in any form at room temperature, specifically, the
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Aluminum- and Magnesium-Alloy Products
methods of determination of yield strength, yield point elon-
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E 4 Practices for Force Verification of Testing Machines
gation, tensile strength, elongation, and reduction of area.
E 6 Terminology Relating to Methods of Mechanical Test-
NOTE 1—A complete metric companion to Test Methods E 8 has been 5
ing
developed, therefore, no metric equivalents are shown in these test
E 8M Test Methods for Tension Testing of Metallic Mate-
methods. Committee E28 was granted an exception in 1997 by the
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rials [Metric]
Committee on Standards to maintain E8 and E8M as separate companion
E 29 Practice for Using Significant Digits in Test Data to
standards rather than combining standards as recommended by the Form
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Determine Conformance with Specifications
and Style Manual.
NOTE 2—Gage lengths in these test methods are required to be 4D for
E 83 Practice for Verification and Classification of Exten-
5
most round specimens. Test specimens made from powder metallurgy
someters
(P/M) materials are exempt from this requirement by industry-wide 5
E 345 Test Methods of Tension Testing of Metallic Foil
agreement to keep the pressing of the material to a specific projected area
E 691 Practice for Conducting an Interlaboratory Study to
and density.
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Determine the Precision of a Test Method
NOTE 3—Exceptions to the provisions of these test methods may need
E 1012 Practice for Verification of Specimen Alignment
to be made in individual specifications or test methods for a particular
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material. For examples, see Test Methods and Definitions A 370 and Test Under Tensile Loading
Methods B 557.
3. Terminology
NOTE 4—Room temperature shall be considered to be 50 to 100°F
unless otherwise specified.
3.1 Definitions—The definitions of terms relating to tension
1.2 This standard does not purport to address all of the
testing appearing in Terminology E 6 shall be considered as
safety concerns, if any, associated with its use. It is the applying to the terms used in these test methods of tension
responsibility of the user of this standard to establish appro-
testing. Additional terms being defined are as follows:
priate safety and health practices and determine the applica- 3.1.1 discontinuous yielding—in a uniaxial test, a hesitation
bility of regulatory limitations prior to use.
or fluctuation of force observed at the onset of plastic defor-
mation, due to localized yielding. (The stress-strain curve need
2. Referenced Documents
not appear to be discontinuous.)
−2
2.1 ASTM Standards:
3.1.2 lower yield strength, LYS [FL ]—in a uniaxial test,
A 356/A 356M Specification for Steel Castings, Carbon,
the minimum stress recorded during discontinuous yielding,
Low Alloy, and Stainless Steel, Heavy-Walled for Steam
ignoring transient effects.
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Turbines
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These test methods are under the jurisdiction of ASTM Committee E28 on
Mechanical Testing and are the direct responsibility of Subcommittee E28.04 on
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Uniaxial Testing. Annual Book of ASTM Standards, Vol 01.03.
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Current edition approved Oct. 10, 2001. Published December 2001. Originally Annual Book of ASTM Standards, Vol 02.02.
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published as E8–24T. Last previous edition E 8 – 00b. Annual Book of ASTM Standards, Vol 03.01.
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Annual Book of ASTM Standards, Vol 01.02. Annual Book of ASTM Standards, Vol 14.02.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.
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