ASTM D4226-00
(Test Method)Standard Test Methods for Impact Resistance of Rigid Poly(Vinyl Chloride) (PVC) Building Products
Standard Test Methods for Impact Resistance of Rigid Poly(Vinyl Chloride) (PVC) Building Products
SCOPE
1.1 These test methods cover the determination of the energy required to crack or break rigid poly(vinyl chloride) (PVC) plastic sheeting and profile flat sections used in building products, as well as extruded or molded test samples, under specified conditions of impact from a freefalling standard weight striking an impactor with either of two configurations in contact with the specimen.
1.2 Two test procedures are included:
1.2.1 Procedure A used to determine minimum impact energy required to cause failure (hole, crack, split, shatter, or tear).
1.2.2 Procedure B used to determine minimum impact energy required to cause brittle failure.
1.3 The values in inch-pound units are to be regarded as the standard.
Note 1--There is no similar or equivalent ISO standard.
1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding, those in tables in figures) shall not be considered as requirements of this standard.
1.5 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. Specific precautionary statements are given in Section 8.
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An American National Standard
Designation: D 4226 – 00
Standard Test Methods for
Impact Resistance of Rigid Poly(Vinyl Chloride) (PVC)
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Building Products
This standard is issued under the fixed designation D 4226; 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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1. Scope * Insulating Materials for Testing
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D 883 Terminology Relating to Plastics
1.1 These test methods cover the determination of the
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D 1898 Practice for Sampling of Plastics
energy required to crack or break rigid poly(vinyl chloride)
D 3679 Specification for Rigid Poly(Vinyl Chloride) (PVC)
(PVC) plastic sheeting and profile flat sections used in building
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Siding
products, as well as extruded or molded test samples, under
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E 178 Practice for Dealing with Outlying Observations
specified conditions of impact from a freefalling standard
weightstrikinganimpactorwitheitheroftwoconfigurationsin
3. Terminology
contact with the specimen.
3.1 Definitions— Definitions are in accordance with Termi-
1.2 Two test procedures are included:
nology D 883, unless otherwise indicated.
1.2.1 Procedure A, used to determine minimum impact
3.2 Definitions of Terms Specific to This Standard:
energy required to cause failure (hole, crack, split, shatter, or
3.2.1 failure (of test specimen)—signifiedbythepresenceof
tear).
a punched hole, crack, split, shatter, or tear that was created in
1.2.2 Procedure B, used to determine minimum impact
the target area by the impact of the falling weight and is clearly
energy required to cause brittle failure.
visible to the naked eye when the sample is held up to the light
1.3 The values in inch-pound units are to be regarded as the
(see Fig. 1).
standard.
3.2.2 brittle failure—a punched hole, split, or shatter where
NOTE 1—There is no similar or equivalent ISO standard.
a piece of the specimen separates from the main part of the
specimen or a crack that has a 0° angle at the tip as measured
1.4 The text of this standard references notes and footnotes
which provide explanatory material. These notes and footnotes by the naked eye (see Fig. 1).
(excluding,thoseintablesinfigures)shallnotbeconsideredas 3.2.3 mean failure height (Procedure A)—the height from
which the falling weight will cause 50 % of the specimens to
requirements of this standard.
1.5 This standard does not purport to address all of the fail.
3.2.4 mean failure energy (mean impact resistance), ( Pro-
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- cedure A)—energy required to produce 50 % failures; the
product of the weight and mean failure height.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. Specific precau- 3.2.5 normalized mean failure energy (normalized mean
impact resistance)—the mean failure energy per unit (average)
tionary statements are given in Section 8.
specimen thickness (Procedure A).
2. Referenced Documents
3.2.6 mean brittle failure height—the height from which the
2.1 ASTM Standards: falling weight will cause 50 % brittle failures in specimens
D 374 Test Methods for Thickness of Solid Electrical Insu- (Procedure B).
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lation 3.2.7 mean brittle failure energy (mean energy of ductile-
D 618 Practice for Conditioning Plastics and Electrical to-brittle transition), (Procedure B)—energy required to pro-
duce 50 % brittle failures; the product of the weight and mean
brittle failure height.
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These test methods are under the jurisdiction of ASTM Committee D20 on
Plastics and are the direct responsibility of Subcommittee D20.24 on Plastic
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Building Products. Annual Book of ASTM Standards, Vol 08.01.
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Current edition approved Dec. 10, 2000. Published February 2001. Originally Annual Book of ASTM Standards, Vol 03.06.
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published as D 4226 - 83. Last previous edition D 4226 - 99.
Annual Book of ASTM Standards, Vol 08.04.
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Annual Book of ASTM Standards, Vol 10.01. Annual Book of ASTM Standards, Vol 14.02.
*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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D 4226
FIG. 1 Types of Failures of the Specimen
3.2.8 normalized mean brittle failure energy (normalized a stand that has a 0.64-in. (16.3-mm) hole. The falling weight
mean energy of ductile-to-brittle transition), (Procedure B)— impacts on the impactor head tending to drive it through the
the mean brittle failure energy per unit (average) specimen specimen into the hole of the
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