ASTM D2444-17
(Practice)Standard Practice for Determination of the Impact Resistance of Thermoplastic Pipe and Fittings by Means of a Tup (Falling Weight)
Standard Practice for Determination of the Impact Resistance of Thermoplastic Pipe and Fittings by Means of a Tup (Falling Weight)
SIGNIFICANCE AND USE
4.1 The impact resistance of thermoplastic pipe and fittings relates to suitability for service and to quality of processing. Impact resistance may also provide a relative measure of a material's resistance to breakage during handling and installation and, for non-buried applications, to in-service breakage. See Appendix X5 for guidelines for selecting testing combinations.
4.2 Results obtained by use of this practice can be used in three ways:
4.2.1 As the basis for establishing impact test requirements in product standards,
4.2.2 To measure the effect of changes in materials or processing, and
4.2.3 To measure the effect of the environment.
SCOPE
1.1 This practice covers the determination of the impact resistance of thermoplastic pipe and fittings under specified conditions of impact by means of a tup (falling weight). Three interchangeable striking noses are used on the tup, differing in geometrical configuration. Two specimen holders are described.
Note 1: Appendix X1 shows the procedure to determine impact strength.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Designation: D2444 − 17
Standard Practice for
Determination of the Impact Resistance of Thermoplastic
1
Pipe and Fittings by Means of a Tup (Falling Weight)
This standard is issued under the fixed designation D2444; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope moplastic Pipe and Fittings
F412 Terminology Relating to Plastic Piping Systems
1.1 This practice covers the determination of the impact
resistance of thermoplastic pipe and fittings under specified
3. Terminology
conditions of impact by means of a tup (falling weight). Three
3.1 Definitions—Definitions are in accordance with Termi-
interchangeable striking noses are used on the tup, differing in
nology F412, and abbreviations are in accordance with Termi-
geometrical configuration. Two specimen holders are de-
nology D1600, unless otherwise specified.
scribed.
NOTE 1—Appendix X1 shows the procedure to determine impact
3.2 Definitions of Terms Specific to This Standard:
strength.
3.2.1 tup—Thestrikingpartofafallinghammerlikemecha-
1.2 The values stated in inch-pound units are to be regarded
nism.
as standard. The values given in parentheses are mathematical
4. Significance and Use
conversions to SI units that are provided for information only
and are not considered standard. 4.1 The impact resistance of thermoplastic pipe and fittings
relates to suitability for service and to quality of processing.
1.3 This standard does not purport to address all of the
Impact resistance may also provide a relative measure of a
safety concerns, if any, associated with its use. It is the
material’s resistance to breakage during handling and installa-
responsibility of the user of this standard to establish appro-
tion and, for non-buried applications, to in-service breakage.
priate safety, health, and environmental practices and deter-
See Appendix X5 for guidelines for selecting testing combi-
mine the applicability of regulatory limitations prior to use.
nations.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4.2 Results obtained by use of this practice can be used in
ization established in the Decision on Principles for the
three ways:
Development of International Standards, Guides and Recom-
4.2.1 As the basis for establishing impact test requirements
mendations issued by the World Trade Organization Technical
in product standards,
Barriers to Trade (TBT) Committee.
4.2.2 To measure the effect of changes in materials or
processing, and
2. Referenced Documents
4.2.3 To measure the effect of the environment.
2
2.1 ASTM Standards:
5. Apparatus
D618 Practice for Conditioning Plastics for Testing
D1600 Terminology forAbbreviatedTerms Relating to Plas- 5.1 General—One type of impact tester is illustrated in Fig.
tics 1.
D2122 Test Method for Determining Dimensions of Ther-
5.2 Tup:
5.2.1 The tup nose shall be as shown in Fig. 2. When used
with the 0.50-in. (12.7-mm) radius nose, it is designated asTup
1
This pracitce is under the jurisdiction of ASTM Committee F17 on Plastic
A. When used with the 2.00-in. (51-mm) radius nose, it is
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test
Methods. designated as Tup B. When used with the 0.25-in. (6.3-mm)
Current edition approved Nov. 15, 2017. Published February 2018. Originally
radius nose, it is designated as Tup C.
approved in 1965. Last previous edition approved in 2010 as D2444 – 99(2010).
DOI: 10.1520/D2444-17.
NOTE 2—It is suggested that tups be made of scratch-resistant steel to
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
reduce damage to the nose. Badly scarred noses may affect test results.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2.2 The mass of the tup shall be 6, 12, 20, or 30 lb (2.7,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.4, 9.1, or 13.6 kg).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2444 − 17
5.3 Drop Tube:
5.3.1 The drop tube shall be of sufficient length (approxi-
mately 12 ft (3.7 m)) to provide for a fall of at least 10 ft (3.0
m) and shall be mounted so that the lengthwise direction is
vertical as measured with a plumb bob or a spirit level at least
2 ft (610 mm) in length.
5.3.2 Care must be taken to ensure that the tup falls freely;
it must not “chatter”
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2444 − 99 (Reapproved 2010) D2444 − 17
Standard Test Method Practice for
Determination of the Impact Resistance of Thermoplastic
1
Pipe and Fittings by Means of a Tup (Falling Weight)
This standard is issued under the fixed designation D2444; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers the determination of the impact resistance of thermoplastic pipe and fittings under specified
conditions of impact by means of a tup (falling weight). Three interchangeable striking noses are used on the tup, differing in
geometrical configuration. Two specimen holders are described.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
3. Significance and Use
3.1 The impact resistance of thermoplastic pipe and fittings relates to suitability for service and to quality of processing. Impact
resistance may also provide a relative measure of a material’s resistance to breakage during handling and installation and, for
non-buried applications, to in-service breakage. See Appendix X4 for guidelines for selecting testing combinations.
3.2 Results obtained by use of this test method can be used in three ways:
3.2.1 As the basis for establishing impact test requirements in product standards,
3.2.2 To measure the effect of changes in materials or processing, and
3.2.3 To measure the effect of the environment.
4. Apparatus
4.1 General—One type of impact tester is illustrated in Fig. 1.
4.2 Tup:
4.2.1 The tup nose shall be as shown in Fig. 2. When used with the 0.50-in. (12.7-mm) radius nose, it is designated as Tup A.
When used with the 2.00-in. (51-mm) radius nose, it is designated as Tup B. When used with the 0.25-in. (6.3-mm) radius nose,
it is designated as Tup C.
NOTE 1—It is suggested that tups be made of scratch-resistant steel to reduce damage to the nose. Badly scarred noses may affect test results.
4.2.2 The mass of the tup shall be 6, 12, 20, or 30 lb (2.7, 5.4, 9.1, or 13.6 kg).
4.3 Drop Tube:
1
This test method pracitce is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test
Methods.
Current edition approved Aug. 1, 2010Nov. 15, 2017. Published November 2010February 2018. Originally approved in 1965. Last previous edition approved in 20052010
as D2444 – 99(2005).(2010). DOI: 10.1520/D2444-99R10.10.1520/D2444-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2444 − 17
FIG. 1 One Type of Tup Impact Tester
NOTE 1—Dimensions are in inches (millimetres).
FIG. 2 Tup Nose Detail
2
---------------------- Page: 2 ----------------------
D2444 − 17
4.3.1 The drop tube shall be of sufficient length (approximately 12 ft (3.7 m)) to provide for a fall of at least 10 ft (3.0 m) and
shall be mounted so that the lengthwise direction is vertical as measured with a plumb bob or a spirit level at least 2 ft (610 mm)
in length.
4.3.2 Care must be taken to ensure that the tup falls freely; it must not “chatter” down the tube.
NOTE 2—No material for the drop tube is specified. However, a colddrawn seamless steel tubing with an inside diameter of 2.563 6 0.003 in. (65.10
1
6 0.08 mm), or acrylonitrile-butadiene-styrene (ABS) or poly(vinyl chloride) (PVC) plas
...
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