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 The
test methods described in the ASTM E8 specification
cover the tension testing of metallic materials in any form at room temperature,
and more specifically, the methods used to determine yield strength, yield
point, tensile strength, elongation, and reduction of area.
Tension tests determine the strength and ductility of
materials under uniaxial tensile stresses. This information may be
helpful in comparisons of materials, in the development of new alloys, for
quality control, to support structural design, and acceptance testing for
commercial shipments.
Proper test specimen alignment, grip and face selection are
critical factors in obtaining valid test results. Test specimens must
be aligned correctly at the beginning of a test to avoid bending moments or side
loading. The specimen must also remain in this perfect alignment throughout the
duration of the test. If the specimen slips in the grips, or becomes deformed in
the grip area, the test would be invalidated. Here at WMT&R, with the help of
our Mechanical Engineering Department,
and our in-house Full Service Machine Shop,
we custom design and manufacture any specialized grips and fixturing needed.
For complete ASTM E 8
specification go to
ASTM International.
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