ASTM D5942-96
(Test Method)Test Method for Determination of Charpy Impact Strength (Withdrawn 1998)
Test Method for Determination of Charpy Impact Strength (Withdrawn 1998)
General Information
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: D 5942 – 96
AMERICAN SOCIETY FOR TESTING AND MATERIALS
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Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
1
Determining Charpy Impact Strength of Plastics
This standard is issued under the fixed designation D 5942; 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 1.7 This test method specifies preferred dimensions for the
test specimen. Tests that are conducted on specimens of
1.1 This test method covers a procedure for determining the
different dimensions and notches, or on specimens that are
Charpy impact strength of plastics under defined conditions. A
prepared under different conditions, may produce results that
number of different types of specimen and test configurations
are not comparable. Other factors, such as the energy capacity
are defined. Different test parameters are specified according to
of the pendulum, its impact velocity, and the conditioning of
the type of material, type of test specimen, and type of notch.
the specimens, can also influence the results. Consequently,
1.2 This test method is used for investigating the behavior
when comparative data are required, these factors must be
of specified types of specimen under the impact conditions
controlled and recorded carefully.
defined and for estimating the brittleness or toughness of
1.8 This test method should not be used as a source of data
specimens within the limitations inherent in the test conditions.
for design calculations of components. Information on the
1.3 This test method has a greater range of applicability than
typical behavior of a material can be obtained, however, by
that given in Test Method D 5941 and is more suitable for the
testing at different temperatures, by varying the notch radius or
testing of materials showing interlaminar shear fracture or of
the thickness, or both, and by testing specimens prepared under
materials exhibiting surface effects due to environmental
different conditions.
factors.
1.9 This test method is identical to ISO 179. This test
1.4 This test method is suitable for use with the following
method is comparable to Test Method D 256, but neither test
range of materials:
method should be substituted for the other. The two test
1.4.1 Rigid thermoplastics molding and extrusion materials,
methods may differ with respect to test specimen dimensions,
including filled and reinforced compounds in addition to
test specimen conditioning, test equipment, testing conditions,
unfilled types; rigid thermoplastic sheets;
etc. The two test methods may not give the same results.
1.4.2 Rigid thermosetting molding materials, including
1.10 The values stated in SI units are to be regarded as the
filled and reinforced compounds; rigid thermosetting sheets,
standard. The values given in parentheses are for information
including laminates;
only.
1.4.3 Fiber-reinforced thermoset and thermoplastic compos-
1.11 This standard does not purport to address all of the
ites incorporating unidirectional or nonunidirectional rein-
safety concerns, if any, associated with its use. It is the
forcements such as mat, woven fabrics, woven rovings,
responsibility of the user of this standard to establish appro-
chopped strands, combination and hybrid reinforcements, rov-
priate safety and health practices and determine the applica-
ings, and milled fibers; sheets made from pre-impregnated
bility of regulatory limitations prior to use.
materials (prepregs); and
1.4.4 Thermotropic liquid-crystal polymers.
2. Referenced Documents
1.5 This test method is not normally suitable for use with
2.1 ASTM Standards:
rigid cellular materials and sandwich structures containing
D 256 Test Method for Determining the Pendulum Impact
cellular material. Also, notched specimens are not normally
2
Resistance of Notched Specimens of Plastics
used for long-fiber-reinforced composites or for thermotropic
D 5936 Specification for Multipurpose Test Specimens
liquid-crystal polymers.
3
Used for Testing Plastics
1.6 This test method is adapted to the use of specimens that
D 5939 Practice for Preparing Multipurpose Test Specimens
may be either molded to the chosen dimensions, machined
3
and Bars of Thermoplastics by Injection Moulding
from the central portion of a standard multipurpose test
D 5940 Practice for Preparing Small Plate Test Specimens
specimen (see ISO 3167 (Specification D 5936)), or machined
3
of Thermoplastics by Injection Moulding
from finished and semifinished products such as moldings,
D 5941 Test Method for Determining the Izod Impact
lamin
...
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