ASTM D6110-04e1

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e1
Designation:D6110–04
Standard Test Method for
Determining the Charpy Impact Resistance of Notched
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Specimens of Plastics
This standard is issued under the fixed designation D 6110; 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.
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e NOTE—Editorially re-inserted Figure 6 in June 2004.
of notching apparatus; quality of the notch; time between notching and
1. Scope*
test; test specimen thickness; test specimen width under notch; and
1.1 This test method is used to determine the resistance of
environmental conditioning.
plastics to breakage by flexural shock as indicated by the
1.2 This standard does not purport to address all of the
energy extracted from standardized (see Note 1) pendulum-
safety concerns, if any, associated with its use. It is the
type hammers, mounted in standardized machines, in breaking
responsibility of the user of this standard to establish appro-
standard specimens with one pendulum swing. This test
priate safety and health practices and determine the applica-
methodrequiresspecimenstobemadewithamillednotch(see
bility of regulatory limitations prior to use.
Note 2). The notch produces a stress concentration which
promotes a brittle, rather than a ductile, fracture. The results of
NOTE 4—This standard resembles ISO 179 in title only. The content is
this test method are reported in terms of energy absorbed per significantly different.
unit of specimen width (see Note 3).
2. Referenced Documents
NOTE 1—The machines with pendulum-type hammers have been stan-
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2.1 ASTM Standards:
dardized in that they must comply with certain requirements including a
D 618 Practice for Conditioning Plastics for Testing
fixed height of hammer fall, which results in a substantially fixed velocity
D 647 Practice for Design of Molds for Test Specimens of
of the hammer at the moment of impact. Hammers of different initial
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energies (produced by varying their effective weights), however, are Plastic Molding Materials
recommended for use with specimens of different impact resistance.
D 883 Terminology Relating to Plastics
Moreover, manufacturers of the equipment are permitted to use different
D 4000 Classification System for Specifying Plastic Mate-
lengths and constructions of pendulums with possible differences in
rials
pendulum rigidities resulting (see Section 5). Be aware that other
D 4066 Classification System for Nylon Injection and Ex-
differences in machine design do exist.
trusion Materials
NOTE 2—The specimens are standardized in that they have a fixed
D 5942 Test Method for Determination of Charpy Impact
length and fixed depth, however, the width of the specimens is permitted
to vary between limits. One design of milled notch is allowed. The notch Strength
in the specimen serves to concentrate the stress, minimize plastic
D 5947 Test Methods for Physical Dimensions of Solid
deformation, and direct the fracture to the part of the specimen behind the
Plastics Specimens
notch. Scatter in energy-to-break is thus reduced. Because of differences
E 691 Practice for Conducting an Interlaboratory Test Pro-
in the elastic and viscoelastic properties of plastics, however, response to
gram to Determine the Precision of Test Methods
a given notch varies among materials.
NOTE 3—Caution must be exercised in interpreting the results of this
3. Terminology
test method. The following testing parameters have been shown to affect
test results significantly: method of specimen fabrication, including but 3.1 Definitions—For definitions related to plastics, see Ter-
not limited to processing technology, molding conditions, mold design,
minology D 883.
and thermal treatment; method of notching; speed of notching tool; design
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This test method are under the jurisdiction of ASTM Committee D20 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics and are the direct responsibility of Subcommittee D20.10 on Mechanical contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Properties. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved March 1, 2004. Published April 2004. Originally the ASTM website.
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approved in 1997. Last previous edition approved in 2002 as D 6110 - 02. Discontinued 1994; Replaced by D 1896, D 3419, D 3641, D 4703, D 5227.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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