ASTM F2136-05

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An American National Standard
Designation:F2136–05
Standard Test Method for
Notched, Constant Ligament-Stress (NCLS) Test to
Determine Slow-Crack-Growth Resistance of HDPE Resins
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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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope tance of Polyolefin Geomembranes Using Notched Con-
stant Tensile Load Test
1.1 This test method is used to determine the susceptibility
E4 Practices for Force Verification of Testing Materials
of high-density polyethylene (HDPE) resins or corrugated pipe
E 691 Practice for Conducting an Interlaboratory Study to
to slow-crack-growth under a constant ligament-stress in an
Determine the Precision of a Test Method
acceleratingenvironment.Thistestmethodisintendedtoapply
F 412 Terminology Relating to Plastic Piping Systems
only to HDPE of a limited melt index and density range as
F 1473 Test Method for Notch Tensile Test to Measure the
defined in AASHTO Standard Specification M 294. This test
Resistance to Slow Crack Growth of Polyethylene Pipes
method may be applicable for other materials, but data are not
and Resins
available for other materials at this time.
2.2 Other Document:
1.2 This test method measures the failure time associated
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AASHTO Standard Specification M 294
with a given test specimen at a constant, specified, ligament-
stress level.
3. Summary of Test Method
1.3 The values stated in inch-pound units are to be regarded
3.1 This test method subjects a dumbbell-shaped, notched
asthestandard.Valuesgiveninparenthesesareforinformation
test-specimen (Fig. 1) to a constant ligament-stress in the
only.
presence of a surface-active agent at an elevated temperature.
1.4 Definitions are in accordance with Terminology F 412,
It differs from Test Method D 5397 in that a constant ligament
and abbreviations are in accordance withTerminology D 1600,
stress is used instead of a constant tensile load.
unless otherwise specified.
1.5 This standard does not purport to address all of the
4. Significance and Use
safety concerns, if any, associated with its use. It is the
4.1 This test method does not purport to interpret the data
responsibility of the user of this standard to establish appro-
generated.
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
2 compression-molded into a plaque or on extruded HDPE
2.1 ASTM Standards:
corrugated pipe that is chopped and compression-molded into
D 1600 Terminology for Abbreviated Terms Relating to
a plaque (see 7.1.1 for details).
Plastics
D 1822 Test Method for Tensile-Impact Energy to Break
5. Apparatus
Plastics and Electrical Insulating Materials
5.1 BlankingDie—Adie suitable for cutting test specimens.
D 4703 Practice for Compression Molding Thermoplastic
Acceptable dies are: the type L die per Test Method D 1822,
Materials in Test Specimens, Plaques, or Sheets
with holes drilled or punched in the tab areas after die cutting;
D 5397 Test Method for Evaluation of Stress Crack Resis-
a die with the dimensions and tolerances specified in Fig. 2.
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5.2 Stress-Crack Testing Apparatus —A lever loading ma-
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chine, with a lever arm ratio of 2:1 to 5:1 similar to that
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
Methods.
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Current edition approved June 1, 2005. Published June 2005. Originally Available from American Association of State Highway and Transportation
e1.
approved in 2001. Last previous edition approved in 2001 as F2136–01 Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Testing apparatus is available from BT Technology, Inc., 320 N. Railroad St.,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Rushville, IL 62681; Materials Performance, Inc., 2151 Harvey Mitchell Pkwy, S.,
Standards volume information, refer to the standard’s Document Summary page on Suite 208, College Station, TX 77840; Satec Systems, 900 Liberty St., Grove City,
the ASTM website. PA 16127; or equivalent.
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F2136–05
T = thickness.
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