ASTM D2644 - 12

    Standard Tolerances for Yarns Spun on the Woolen System

    Active Standard ASTM D2644 | Developed by Subcommittee: D13.58

    Book of Standards Volume: 07.01


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    1. Scope

    1.1 These tolerances are applicable to all yarns spun on the woolen system and composed of any fiber or mixture of fibers, even though there might not be any wool present in the yarn.

    Note 1—For tolerances for other spun yarns, see Tolerances D2645 .


    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

    D123 Terminology Relating to Textiles

    D1422 Test Method for Twist in Single Spun Yarns by the Untwist-Retwist Method

    D1423 Test Method for Twist in Yarns by Direct-Counting

    D1578 Test Method for Breaking Strength of Yarn in Skein Form

    D1907 Test Method for Linear Density of Yarn (Yarn Number) by the Skein Method

    D2256 Test Method for Tensile Properties of Yarns by the Single-Strand Method

    D2257 Test Method for Extractable Matter in Textiles

    D2258 Practice for Sampling Yarn for Testing

    D2494 Test Method for Commercial Mass of a Shipment of Yarn or Manufactured Staple Fiber or Tow

    D2645 Tolerances for Yarns Spun on the Cotton or Worsted Systems

    D4849 Terminology Related to Yarns and Fibers


    ICS Code

    ICS Number Code 59.080.20 (Yarns)

    UNSPSC Code

    UNSPSC Code 11151508(Wool fibers)


    DOI: 10.1520/D2644-12

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    ASTM D2644

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