ASTM B831-93(1998)
(Test Method)Standard Test Method for Shear Testing of Thin Aluminum Alloy Products
Standard Test Method for Shear Testing of Thin Aluminum Alloy Products
SCOPE
1.1 This test method covers single shear testing of thin wrought and cast aluminum alloy products to determine shear ultimate strengths.
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are provided for information only.
1.3 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 determine the applicability of regulatory limitations prior to use.
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Designation:B831–93 (Reapproved 1998)
Standard Test Method for
Shear Testing of Thin Aluminum Alloy Products
This standard is issued under the fixed designation B 831; 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 5. Significance and Use
1.1 This test method covers single shear testing of thin 5.1 The intent of this test method is to provide a means of
wrought and cast aluminum alloy products to determine shear measuring the ultimate shear strength of thin aluminum alloy
ultimate strengths. wrought and cast products. Data obtained by this test method
1.2 The values stated in inch-pound units are to be regarded are used to calculate minimum properties that can be utilized in
as the standard. The SI values given in parentheses are the design of structural members such as found in aircraft. It is
provided for information only. recognized that the loading conditions developed by this test
1.3 This standard does not purport to address all of the method, and by most others, are not ideal in that they do not
safety concerns, if any, associated with its use. It is the strictly satisfy the definitions of pure shear. However, rarely do
responsibility of the user of this standard to establish appro- pure shear conditions exist in structures.
priate safety and health practices and determine the applica-
NOTE 1—This test method is not interchangeable with that described in
bility of regulatory limitations prior to use.
Methods B 565 and B 769. Shear strengths obtained by this test method
have been shown to vary from those developed by the other methods.
2. Referenced Documents
6. Apparatus
2.1 The following documents of the issue in effect on the
date of material purchase, unless otherwise noted, form a part
6.1 Testing Machines—The testing machines shall conform
of this specification to the extent referenced herein:
to the requirements of Practice E 4. The loads used to deter-
2.2 ASTM Standards:
mine the shear strength shall be within the loading range of the
B 565 Test Method for Shear Testing of Aluminum and
testing machine as defined in Practice E 4.
Aluminum-Alloy Rivets and Cold-Heading Wire and
6.2 Loading Device:
Rods
6.2.1 The loading device shall be of the type shown in Fig.
B 769 Test Method for Shear Testing of Aluminum Alloys
1 and shall be made of a hardened steel.
E 4 Practices for Force Verification of Testing Machines
7. Test Specimens
E 6 Terminology Relating to Methods of Mechanical Test-
ing
7.1 The specimen size shall be 1 ⁄2 in. (38.1 mm) wide by
4 ⁄2 in. (114 mm) long. The specimen thickness shall be full
3. Terminology
thickness 0.250 in. under (6.4 mm). The minimum specimen
3.1 Definitions—The definitions of terms relating to shear
thickness will be dictated by the material’s ability to resist
testing in Terminology E 6 are applicable to the terms used in
buckling around the pin hole area during testing.The specimen
this test method.
is shown in Fig. 2.
7.2 The test area to be sheared shall be centered within6
4. Summary of Test Method
0.001 in. (0.025 mm) of the loadline of the specimen.
4.1 This test method consists of subjecting a full thickness
7.3 Measurement of the thickness and length of the area to
or machined rectangular test specimen to single shear loading
be sheared shall be made as follows:
to failure in a test fixture using a tension testing machine. The
7.3.1 Measurement of the specimen thickness shall be made
shear strength is calculated from the maximum load required to
atalocationbetweenthetwoslotsmachinedintothespecimen.
fracture the specimen.
Measurement of the length of the shear area shall be between
the ends of the slots machined into the specimen, Fig. 2. For
dimensions0.200in.(5.1mm)andover,measuretothenearest
This test method is under the jurisdiction of ASTM B-7 on Light Metals and
Alloys and is the direct responsibility of Subcommittee B07.05 on Testing.
Current edition approved Jan. 15, 1993. Published March 1993. Davies, R. E., and Kaufman, J. G., “Effects of Test Method and Specimen
Annual Book of ASTM Standards, Vol 02.02. Orientation on Shear Strengths ofAluminumAlloys,” Proceedings,ASTM, Vol 64,
Annual Book of ASTM Standards, Vol 03.01. 1964.
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B831
with rough surfaces due to processing may be measured and recorded to
the nearest 0.001 in. (0.025 mm).
7.4 All machined surfaces in the test area sha
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