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    ASTM D3768 - 16

    Standard Test Method for Microcellular Urethanes—Flexural Recovery

    Active Standard ASTM D3768 | Developed by Subcommittee: D20.22

    Book of Standards Volume: 08.02

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    Significance and Use

    4.1 This test method is used to indicate the ability of a material to recover after a 180° bend around a 12.7-mm (0.5-in.) diameter mandrel at room temperature.

    4.2 Before proceeding with this test method, reference shall be made to any specification for the material being tested. Any test specimen preparation, conditioning, or dimensions, or combination thereof, and testing parameters covered in the materials specification shall take precedence over those mentioned in these test methods. If there are no material specifications, then the default conditions apply.

    Note 2: This test method is applicable to solid urethanes.

    1. Scope

    1.1 This test method covers the procedure and apparatus for measuring the flexural recovery of microcellular urethanes.

    1.2 The values stated in SI units are to be regarded as 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.

    Note 1: There is no known ISO equivalent to this standard.


    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

    D883 Terminology Relating to Plastics

    D3040 Practice for Preparing Precision Statements for Standards Related to Rubber and Rubber Testing

    D3489 Test Methods for Microcellular Urethane Materials

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

    ICS Code

    ICS Number Code 83.100 (Cellular materials)

    Referencing This Standard
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    DOI: 10.1520/D3768-16

    Citation Format

    ASTM D3768-16, Standard Test Method for Microcellular Urethanes—Flexural Recovery, ASTM International, West Conshohocken, PA, 2016, www.astm.org

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