ASTM F2634-15(2021)
(Test Method)Standard Test Method for Laboratory Testing of Polyethylene (PE) Butt Fusion Joints using Tensile-Impact Method
Standard Test Method for Laboratory Testing of Polyethylene (PE) Butt Fusion Joints using Tensile-Impact Method
SIGNIFICANCE AND USE
4.1 This test method is designed to impart tensile impact energy to a butt fused plastic pipe specimen, record the energy to fail the specimen and plot the load over time curve of the tensile test. Energy recorded at yield and rupture and the rupture mode (brittle or ductile) are used as criteria in the evaluation of the butt fusion joint. The evaluation of the force/time curve not only makes it possible to compare different butt fusion parameters but also to evaluate the rupture mode of the specimen to determine joint integrity. Each coupon's test results will usually be compared to test results for coupons machined from the base pipe material, un-fused.
4.1.1 These data are also useful for qualitative characterization and for research and development. For many materials, there may be a specification that requires the use of this test method, but with some procedural modifications that take precedence when adhering to the specification. Therefore, it is advisable to refer to that material specification before using this test method.
4.2 Tensile properties may vary with specimen preparation and with speed and environment of testing. Consequently, where precise comparative results are desired, these factors must be carefully controlled.
4.2.1 It is realized that a material cannot be tested without also testing the method of preparation of that material. Hence, when comparative tests of materials per se are desired, the greatest care must be exercised to ensure that all specimens are prepared in exactly the same way, unless the test is to include the effects of specimen preparation. While care must be taken to secure the maximum degree of uniformity in details of preparation, treatment, and handling, the exact dimensions of the test specimens are entered into the Data Acquisition System (DAS) before initiating the test.
SCOPE
1.1 This is a tensile impact test method that develops enough tensile impact energy at specific rates of strain to rupture standard tensile impact specimens of butt fused plastic pipe. It is used to determine the quality of PE butt fusion joints made in the field or in qualification testing. It can also be used to determine the optimum butt fusion joining parameters of PE materials.
1.2 This test method is applicable for testing pipe specimens with a diameter 2.37 in. (60.3 mm) and larger with a wall thickness from 0.25 in. (6.3 mm) and larger.
Note 1: This test method is similar to ISO 13953.
1.3 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.
1.4 This test method may be used alone or together with other test methods, to evaluate the quality of the butt fused joints. When this test, conducted at laboratory temperatures per 9.2, is combined with the elevated temperature, sustained pressure test in Specification D3035, both the short term and long term strength of the PE butt fusion joint will be verified.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 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.
General Information
Standards Content (Sample)
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.
Designation: F2634 − 15 (Reapproved 2021)
Standard Test Method for
Laboratory Testing of Polyethylene (PE) Butt Fusion Joints
1
using Tensile-Impact Method
This standard is issued under the fixed designation F2634; 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.
1. Scope* 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This is a tensile impact test method that develops
D883 Terminology Relating to Plastics
enough tensile impact energy at specific rates of strain to
D2513 Specification for Polyethylene (PE) Gas Pressure
rupture standard tensile impact specimens of butt fused plastic
Pipe, Tubing, and Fittings
pipe. It is used to determine the quality of PE butt fusion joints
D3035 SpecificationforPolyethylene(PE)PlasticPipe(DR-
made in the field or in qualification testing. It can also be used
PR) Based on Controlled Outside Diameter
to determine the optimum butt fusion joining parameters of PE
E177 Practice for Use of the Terms Precision and Bias in
materials.
ASTM Test Methods
1.2 Thistestmethodisapplicablefortestingpipespecimens
E691 Practice for Conducting an Interlaboratory Study to
with a diameter 2.37 in. (60.3 mm) and larger with a wall
Determine the Precision of a Test Method
thickness from 0.25 in. (6.3 mm) and larger.
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2.2 ISO Standard
NOTE 1—This test method is similar to ISO 13953. ISO 13953 Polyethylene (PE) pipes and fittings - Determi-
nation of the tensile strength and failure mode of test
1.3 The values stated in inch-pound units are to be regarded
pieces from a butt-fused joint
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
3. Terminology
and are not considered standard.
3.1 Definitions of Terms Specific to This Standard:
1.4 This test method may be used alone or together with
3.1.1 brittle rupture —Abrittle rupture in a butt fusion joint
other test methods, to evaluate the quality of the butt fused
specimen consists of a clean or nearly clean part between the
joints.Whenthistest,conductedatlaboratorytemperaturesper
joining surfaces resulting in a smooth surface on both sides.
9.2, is combined with the elevated temperature, sustained
(See Fig. 1.)
pressure test in Specification D3035, both the short term and
3.1.2 ductile rupture—Aductileruptureinabuttfusionjoint
long term strength of the PE butt fusion joint will be verified.
specimen consists of either an elongation rupture of the
1.5 This standard does not purport to address all of the
machined pipe outside the joint area (see Fig. 2) or adjacent to
safety concerns, if any, associated with its use. It is the
the butt fusion joint interface but resulting in considerable
responsibility of the user of this standard to establish appro-
material tearing between the pipe end surfaces (see Fig. 3).
priate safety, health, and environmental practices and deter-
3.1.3 maximum force—the maximum force obtained during
mine the applicability of regulatory limitations prior to use.
the test.
1.6 This international standard was developed in accor-
3.1.4 rupture energy—the energy required to rupture the
dance with internationally recognized principles on standard-
coupon.
ization established in the Decision on Principles for the
3.1.5 yield point —The point on the force/time curve where
Development of International Standards, Guides and Recom-
significant plastic deformation begins to occur. For the pur-
mendations issued by the World Trade Organization Technical
poses of this standard, this is defined as occurring at zero slope
Barriers to Trade (TBT) Committee.
point on the force/time curve.
1 2
This test method is under the jurisdiction of ASTM Committee F17 on Plastic For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Methods. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Nov. 1, 2021. Published December 2021. Originally the ASTM website.
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approved in 2007. Last previous edition approved in 2015 as F2634 – 15. DOI: Available from International Organization for Standardization (ISO), 1 rue de
10.1520/F2634-15R21. Varembé, Case postale 56, CH-1211, Geneva 20, Switzerland, http://www.iso.ch.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100
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