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    ASTM D6644 - 01(2021)

    Standard Test Method for Tension Strength of Sew-Through Flange Buttons

    Active Standard ASTM D6644 | Developed by Subcommittee: D13.54

    Book of Standards Volume: 07.02


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    Significance and Use

    5.1 This test measures an important property to users of sew through flange buttons. This is a means of determining the resistance of the bridge of the button to a strain which can cause it to fall off a garment to which it is attached.

    5.2 If there are differences of practical significance between the reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, test samples should be used that are as homogeneous as possible, that are drawn from the material from which the disparate test results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing, Other materials with established test values may be used for this purpose. The test results for the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration of the known bias.

    1. Scope

    1.1 This test method measures the resistance of the bridge of a sew-through button to a steadily increasing strain.

    1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

    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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.4 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

    D618 Practice for Conditioning Plastics for Testing

    D5497 Terminology Relating to Buttons


    ICS Code

    ICS Number Code 19.060 (Mechanical testing); 59.020 (Processes of the textile industry)

    UNSPSC Code

    UNSPSC Code 53141505(Buttons)


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

    DOI: 10.1520/D6644-01R21

    Citation Format

    ASTM D6644-01(2021), Standard Test Method for Tension Strength of Sew-Through Flange Buttons, ASTM International, West Conshohocken, PA, 2021, www.astm.org

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