Standard Test Method for Notched, Constant Ligament-Stress (NCLS) Test to Determine Slow-Crack-Growth Resistance of HDPE Resins or HDPE Corrugated Pipe

SIGNIFICANCE AND USE
This test method does not purport to interpret the data generated.
This test method is intended to compare slow-crack-growth (SCG) resistance for a limited set of HDPE resins.
This test method may be used on virgin HDPE resin compression-molded into a plaque or on extruded HDPE corrugated pipe that is chopped and compression-molded into a plaque (see 7.1.1 for details).
SCOPE
1.1 This test method is used to determine the susceptibility of high-density polyethylene (HDPE) resins or corrugated pipe to slow-crack-growth under a constant ligament-stress in an accelerating environment. This test method is intended to apply only to HDPE of a limited melt index and density range as defined in AASHTO Standard Specification M 294. This test method may be applicable for other materials, but data are not available for other materials at this time.
1.2 This test method measures the failure time associated with a given test specimen at a constant, specified, ligament-stress level.
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 Definitions are in accordance with Terminology F 412, and abbreviations are in accordance with Terminology D 1600, unless otherwise specified.
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.

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Publication Date
31-Oct-2008
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ASTM F2136-08 - Standard Test Method for Notched, Constant Ligament-Stress (NCLS) Test to Determine Slow-Crack-Growth Resistance of HDPE Resins or HDPE Corrugated Pipe
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REDLINE ASTM F2136-08 - Standard Test Method for Notched, Constant Ligament-Stress (NCLS) Test to Determine Slow-Crack-Growth Resistance of HDPE Resins or HDPE Corrugated Pipe
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F2136 − 08
StandardTest Method for
Notched, Constant Ligament-Stress (NCLS) Test to
Determine Slow-Crack-Growth Resistance of HDPE Resins
1
or HDPE Corrugated Pipe
This standard is issued under the fixed designation F2136; 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 D1822 Test Method for Tensile-Impact Energy to Break
Plastics and Electrical Insulating Materials
1.1 This test method is used to determine the susceptibility
D4703 Practice for Compression Molding Thermoplastic
of high-density polyethylene (HDPE) resins or corrugated pipe
Materials into Test Specimens, Plaques, or Sheets
to slow-crack-growth under a constant ligament-stress in an
D5397 Test Method for Evaluation of Stress Crack Resis-
acceleratingenvironment.Thistestmethodisintendedtoapply
tance of Polyolefin Geomembranes Using Notched Con-
only to HDPE of a limited melt index and density range as
stant Tensile Load Test
defined in AASHTO Standard Specification M 294. This test
E4 Practices for Force Verification of Testing Machines
method may be applicable for other materials, but data are not
E691 Practice for Conducting an Interlaboratory Study to
available for other materials at this time.
Determine the Precision of a Test Method
1.2 This test method measures the failure time associated
F412 Terminology Relating to Plastic Piping Systems
with a given test specimen at a constant, specified, ligament-
2.2 Other Document:
stress level.
3
AASHTO Standard Specification M 294
1.3 The values stated in inch-pound units are to be regarded
3. Summary of Test Method
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
3.1 This test method subjects a dumbbell-shaped, notched
and are not considered standard.
test-specimen (Fig. 1) to a constant ligament-stress in the
presence of a surface-active agent at an elevated temperature.
1.4 Definitions are in accordance with Terminology
It differs from Test Method D5397 in that a constant ligament
AASHTO Standard Specification M 294, and abbreviations are
stress is used instead of a constant tensile load.
in accordance with Terminology D1600, unless otherwise
specified.
4. Significance and Use
1.5 This standard does not purport to address all of the
4.1 This test method does not purport to interpret the data
safety concerns, if any, associated with its use. It is the
generated.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4.2 This test method is intended to compare slow-crack-
bility of regulatory limitations prior to use.
growth (SCG) resistance for a limited set of HDPE resins.
4.3 This test method may be used on virgin HDPE resin
2. Referenced Documents
compression-molded into a plaque or on extruded HDPE
2
2.1 ASTM Standards:
corrugated pipe that is chopped and compression-molded into
D1600 Terminology forAbbreviatedTerms Relating to Plas-
a plaque (see 7.1.1 for details).
tics
5. Apparatus
1 5.1 Blanking Die—Adie suitable for cutting test specimens.
This test method is under the jurisdiction of ASTM Committee F17 on Plastic
Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test Acceptable dies are: the type L die per Test Method D1822,
Methods.
with holes drilled or punched in the tab areas after die cutting;
Current edition approved Nov. 1, 2008. Published November 2008. Originally
a die with the dimensions and tolerances specified in Fig. 2.
approved in 2001. Last previous edition approved in 2005 as F2136–05 DOI:
10.1520/F2136-08.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Association of State Highway and Transportation
Standards volume information, refer to the standard’s Document Summary page on Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
the ASTM website. http://www.transportation.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F2136 − 08
T = thickness.
W = specimen width.
NOTE 1—The test specimen is intended to have the same geometry used forTest Method D5397 specimens.The length of the specimen can be changed
to suit the design of the test apparatus. However, there should be a constant neck section with length at least 0.5 in. (13 mm) long.
NOTE2—Itispreferabletomodifythespecimendiesothattheattachmentholesare
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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.
An American National Standard
Designation:F2136–05 Designation:F2136–08
Standard Test Method for
Notched, Constant Ligament-Stress (NCLS) Test to
Determine Slow-Crack-Growth Resistance of HDPE Resins
1
or HDPE Corrugated Pipe
This standard is issued under the fixed designation F 2136; 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
1.1 This test method is used to determine the susceptibility of high-density polyethylene (HDPE) resins or corrugated pipe to
slow-crack-growth under a constant ligament-stress in an accelerating environment. This test method is intended to apply only to
HDPE of a limited melt index and density range as defined in AASHTO Standard Specification M 294. This test method may be
applicable for other materials, but data are not available for other materials at this time.
1.2 This test method measures the failure time associated with a given test specimen at a constant, specified, ligament-stress
level.
1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Valuesgiveninparenthesesareforinformationonly.
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 Definitions are in accordance with Terminology F 412, and abbreviations are in accordance with Terminology D 1600,
unless otherwise specified.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1600 Terminology for Abbreviated Terms Relating to Plastics
D 1822 Test Method for Tensile-Impact Energy to Break Plastics and Electrical Insulating Materials
D 4703 Practice for Compression Molding Thermoplastic Materials into Test Specimens, Plaques, or Sheets
D 5397 Test Method for Evaluation of Stress Crack Resistance of Polyolefin Geomembranes Using Notched Constant Tensile
Load Test
E 4 Practices for Force Verification of Testing Materials Machines
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
F 412Terminology Relating to Plastic Piping Systems
F1473Test Method for Notch Tensile Test to Measure the Resistance to Slow Crack Growth of Polyethylene Pipes and Resins
Terminology Relating to Plastic Piping Systems
2.2 Other Document:
3
AASHTO Standard Specification M 294
3. Summary of Test Method
3.1 This test method subjects a dumbbell-shaped, notched test-specimen (Fig. 1) to a constant ligament-stress in the presence
of a surface-active agent at an elevated temperature. It differs from Test Method D 5397 in that a constant ligament stress is used
instead of a constant tensile load.
1
This test method is under the jurisdiction ofASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.40 on Test Methods.
´1.
Current edition approved June 1, 2005. Published June 2005. Originally approved in 2001. Last previous edition approved in 2001 as F2136–01
Current edition approved Nov. 1, 2008. Published November 2008. Originally approved in 2001. Last previous edition approved in 2005 as F2136–05
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American Association of State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
http://www.transportation.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F2136–08
T = thickness.
W = specimen width.
NOTE 1—ThetestspecimenisintendedtohavethesamegeometryusedforTestMethodD 5397specimens.Thelengthofthespecimencanbechanged
to suit the design of the test apparatus. However, there should be a constant neck section with length at least 0.5 in. (13 mm) long.
NOTE 2—Itispreferabletomodifythespecimendiesothatthe
...

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