ASTM A931 - 18

    Standard Test Method for Tension Testing of Wire Ropes and Strand

    Active Standard ASTM A931 | Developed by Subcommittee: A01.03

    Book of Standards Volume: 01.03


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    Significance and Use

    4.1 Tension tests are generally to be performed on new wire ropes. The use of wire rope in any application can reduce individual wire strengths due to abrasion and nicking that will result in the wire rope strength being reduced. Damage to the outer wires will also lower the maximum strength achieved during tension testing.

    4.2 The modulus of elasticity of wire rope is not considered to be a standard requirement at this time. The determination of this material property requires specialized equipment and techniques.

    4.3 Rope to be tested should be thoroughly examined to verify that no external wire damage is present. If present, it should be noted. When possible, a new undamaged sample should be obtained for testing.

    4.4 End attachments and their installation can directly affect breaking force achieved during testing. Any attachment that can be used to directly achieve the required rope breaking force can be used. Standard testing with a poured socket, using zinc, white metal or thermoset resin, has been considered the most efficient. Proficiency in attachment of any fitting can have a direct effect on the final test results.

    1. Scope

    1.1 This test method covers the tension testing of wire ropes and strand at room temperature, specifically to determine the measured breaking force, yield strength, elongation, and modulus of elasticity. Methods described in this standard are not intended for other purposes.

    1.2 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.

    1.3 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. Specific precautionary statements are given in Note 1 and Note 2.

    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.

    ISO Standard

    ISO 17558 Specification for Steel Wire Ropes Socketing Procedures Molten Metal and Resin Socketing

    ASTM Standards

    A586 Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand

    A603 Specification for Zinc-Coated Steel Structural Wire Rope

    A1023/A1023M Specification for Stranded Carbon Steel Wire Ropes for General Purposes

    E4 Practices for Force Verification of Testing Machines

    E6 Terminology Relating to Methods of Mechanical Testing

    E8 Test Methods for Tension Testing of Metallic Materials [Metric] E0008_E0008M


    ICS Code

    ICS Number Code 77.140.65 (Steel wire, wir ropes and link chains)

    UNSPSC Code

    UNSPSC Code 31152200(Non electric iron and steel wire)


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

    DOI: 10.1520/A0931-18

    Citation Format

    ASTM A931-18, Standard Test Method for Tension Testing of Wire Ropes and Strand, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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