ASTM E8-03

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An American National Standard
Designation:E8–03 American Association State
Highway and Transportation Officials Standard
AASHTO No.: T68
Standard Test Methods for
1
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.
1. Scope* B 557 Test Methods of Tension Testing Wrought and Cast
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Aluminum- and Magnesium-Alloy Products
1.1 These test methods cover the tension testing of metallic
5
E 4 Practices for Force Verification of Testing Machines
materials in any form at room temperature, specifically, the
E 6 Terminology Relating to Methods of Mechanical Test-
methods of determination of yield strength, yield point elon-
5
ing
gation, tensile strength, elongation, and reduction of area.
E 8M Test Methods for Tension Testing of Metallic Mate-
NOTE 1—A complete metric companion to Test Methods E 8 has been 5
rials [Metric]
developed, therefore, no metric equivalents are shown in these test
E 29 Practice for Using Significant Digits in Test Data to
methods. Committee E28 was granted an exception in 1997 by the
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Determine Conformance with Specifications
Committee on Standards to maintain E8 and E8M as separate companion
E 83 Practice for Verification and Classification of Exten-
standards rather than combining standards as recommended by the Form
5
and Style Manual. someters
NOTE 2—Gage lengths in these test methods are required to be 4D for
E 208 Test Method for Conducting Drop-Weight Test to
most round specimens. Test specimens made from powder metallurgy
Determine Nil-Ductility Transition Temperature of Ferritic
(P/M) materials are exempt from this requirement by industry-wide 5
Steels
agreement to keep the pressing of the material to a specific projected area
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E 345 Test Methods of Tension Testing of Metallic Foil
and density.
E 691 Practice for Conducting an Interlaboratory Study to
NOTE 3—Exceptions to the provisions of these test methods may need
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Determine the Precision of a Test Method
to be made in individual specifications or test methods for a particular
material. For examples, see Test Methods and Definitions A 370 and Test E 1012 Practice for Verification of Specimen Alignment
5
Methods B 557.
Under Tensile Loading
NOTE 4—Room temperature shall be considered to be 50 to 100°F
unless otherwise specified.
3. Terminology
1.2 This standard does not purport to address all of the 3.1 Definitions—The definitions of terms relating to tension
safety concerns, if any, associated with its use. It is the
testing appearing in Terminology E 6 shall be considered as
responsibility of the user of this standard to establish appro- applying to the terms used in these test methods of tension
priate safety and health practices and determine the applica-
testing. Additional terms being defined are as follows:
bility of regulatory limitations prior to use. 3.1.1 discontinuous yielding—in a uniaxial test, a hesitation
or fluctuation of force observed at the onset of plastic defor-
2. Referenced Documents
mation, due to localized yielding. (The stress-strain curve need
2.1 ASTM Standards:
not appear to be discontinuous.)
−2
A 356/A 356M Specification for Steel Castings, Carbon,
3.1.2 lower yield strength, LYS [FL ]—in a uniaxial test,
Low Alloy, and Stainless Steel, Heavy-Walled for Steam
the minimum stress recorded during discontinuous yielding,
2
Turbines
ignoring transient effects.
−2
A 370 Test Methods and Definitions for Mechanical Testing
3.1.3 upper yield strength, UYS [FL ]— in a uniaxial test,
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of Steel Products
the first stress maximum (stress at first zero slope) associated
with discontinuous yielding at or near the onset of plastic
deformation.
3.1.4 yield point elongation, YPE— in a uniaxial test, the
1
These test methods are under the jurisdiction of ASTM Committee E28 on
strain (expressed in percent) separating the stress-strain curve’s
Mechanical Testing and are the direct responsibility of Subcommittee E28.04 on
Uniaxial Testing.
Current edition approved July 10, 2003. Published September 2003. Originally
e2 4
approved in 1924. Last previous edition appproved 2000 as E8–01 . Annual Book of ASTM Standards, Vol 02.02.
2 5
Annual Book of ASTM Standards, Vol 01.02. Annual Book of ASTM Standards, Vol 03.01.
3 6
Annual Book of ASTM Standards, Vol 01.03. Annual Book of ASTM Standards, Vol 14.02.
*A Summary of Changes section appears at the end of this standard.
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