ASTM B557M-94

Standard Test Methods of Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products [Metric]

SCOPE
1.1 These test methods cover the tension testing of wrought and cast aluminum- and magnesium-alloy products, excepting aluminum foil.   Note 1-These metric test methods are the equivalents of those in Test Methods B557, and are compatible in technical content except for the requirement of longer gage lengths for round specimens. Note 2-Exceptions to the provisions of these methods may need to be made in individual specifications or test methods for a particular material.
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.

General Information

• Status: Historical
• Publication Date: 31-Dec-1993
• ICS: 77.150.10 - Aluminium products
• ICS: 77.150.20 - Magnesium products
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.05 - Testing

Standards Content (Sample)

Designation: B 557M – 94
METRIC
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Methods of
Tension Testing Wrought and Cast Aluminum- and
1
Magnesium-Alloy Products [Metric]
This standard is issued under the fixed designation B 557M; 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.
4
1. Scope E 345 Test Methods of Tension Testing of Metallic Foil
E 1012 Practice for Verification of Specimen Alignment
1.1 These test methods cover the tension testing of wrought
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Under Tensile Loading
and cast aluminum- and magnesium-alloy products, excepting
2
aluminum foil.
3. Terminology
NOTE 1—These metric test methods are the equivalents of those in Test
3.1 The definitions of terms relating to tension testing
Methods B 557, and are compatible in technical content except for the
appearing in Terminology E 6 shall be considered as applying
requirement of longer gage lengths for round specimens.
to the terms used in these test methods.
NOTE 2—Exceptions to the provisions of these methods may need to be
made in individual specifications or test methods for a particular material.
4. Significance and Use
1.2 This standard does not purport to address all of the
4.1 Tension tests provide information on the strength and
safety concerns, if any, associated with its use. It is the
ductility of materials under uniaxial tensile stresses. This
responsibility of the user of this standard to establish appro-
information may be useful in comparisons of materials alloy
priate safety and health practices and determine the applica-
development, quality control, and design under certain circum-
bility of regulatory limitations prior to use.
stances.
4.2 The results of tension tests of specimens machined to
2. Referenced Documents
standardized dimensions from selected portions of a part or
2.1 The following documents of the issue in effect at the
material may not totally represent the strength and ductility
time of reference form a part of these methods to the extent
properties of the entire end product or its in-service behavior in
referenced herein:
different environments.
2.2 ASTM Standards:
4.3 For quality control purposes, results derived from stan-
B 26/B 26M Specification for Aluminum-Alloy Sand Cast-
dardized tension test specimens can be considered to be
3
ings
indicative of the response of the material from which they were
3
B 80 Specification for Magnesium-Alloy Sand Castings
taken. These test methods are considered satisfactory for
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B 85 Specification for Aluminum-Alloy Die Castings
acceptance testing of commercial shipments and have been
B 108 Specification for Aluminum-Alloy Permanent Mold
used extensively in the trade for this purpose.
3
Castings
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E 4 Practices for Force Verification of Testing Machines
5. Apparatus
E 6 Terminology Relating to Methods of Mechanical Test-
5.1 Testing Machines:
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ing
5.1.1 Machines used for tension testing shall conform to the
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E 8 Test Methods of Tension Testing of Metallic Materials
requirements of Practices E 4. The loads used in determining
E 29 Practice for Using Significant Digits in Test Data to
tensile strength and yield strength shall be within the verified
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Determine Conformance with Specifications
loading range of the testing machine as defined in Practices
E 83 Practice for Verification and Classification of Exten-
E4.
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someters
5.2 Gripping Devices:
5.2.1 General—Various types of gripping devices may be
1
These test methods are under the jurisdiction of ASTM Committee B-7 on
used to transmit the measured load applied by the testing
Light Metals and Alloys, and are the direct responsibility of Subcommittee B07.05
machine to the test specimens. To ensure axial tensile stress
on Testing.
within the gage length, the axis of the test specimen must
Current edition approved May 15, 1994. Published July 1994. Originally
e1
coincide with the center line of the heads of the testing
published as B 557M – 76. Last previous edition B 557M – 84 .
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For test methods of tension testing of aluminum foil, see Test Methods E 345.
machine. Any departure from this requirement may introduce
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Annual Book of ASTM Standards, Vol 02.02.
bending stresses that are not included in the usual stress
4
Annual Book of ASTM Standards, Vol 03.01.
5
computation (load divided by cross-sectional area).
Annual Book of ASTM Standards, Vol 14.02.
1

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B 557M
NOTE 3—The effect of this eccentric loading may be illustrated by
calculating the bending moment and stress thus added. For a standard
12.50-mm diameter specimen, the stress increase is 1.5 percentage points
for each 0.025 mm of eccentricity. This error
...