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    ASTM F2136 - 18

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

    Active Standard ASTM F2136 | Developed by Subcommittee: F17.40

    Book of Standards Volume: 08.04

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    Significance and Use

    4.1 This test method does not purport to interpret the data generated.

    4.2 This test method is intended to compare slow-crack-growth (SCG) resistance for a limited set of HDPE resins.

    4.3 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).

    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 (<0.4 to 0.15) and density range (>0.947 to 0.955 g/cm3). 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 F412, and abbreviations are in accordance with Terminology D1600, 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, 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.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1600 Terminology for Abbreviated Terms Relating to Plastics

    D1822 Test Method for Tensile-Impact Energy to Break Plastics and Electrical Insulating Materials

    D4703 Practice for Compression Molding Thermoplastic Materials into Test Specimens, Plaques, or Sheets

    D5397 Test Method for Evaluation of Stress Crack Resistance of Polyolefin Geomembranes Using Notched Constant Tensile Load Test

    E4 Practices for Force Verification of Testing Machines

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    F412 Terminology Relating to Plastic Piping Systems

    ICS Code

    ICS Number Code 19.060 (Mechanical testing); 83.140.01 (Rubber and plastic products in general)

    UNSPSC Code

    UNSPSC Code 40171520(Commercial HDPE pipe)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/F2136-18

    Citation Format

    ASTM F2136-18, Standard Test Method for Notched, Constant Ligament-Stress (NCLS) Test to Determine Slow-Crack-Growth Resistance of HDPE Resins or HDPE Corrugated Pipe, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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