ASTM D2645 - 07(2012)

    Standard Tolerances for Yarns Spun on the Cotton or Worsted Systems

    Active Standard ASTM D2645 | 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 cotton or the worsted system, either carded or combed, and composed of any fiber or mixture of fibers, except cotton tire cords and novelty or fancy yarns.

    1.2 These tolerances are applicable only to yarns taken from packages, and not to yarns taken from greige or processed fabrics.

    Note 1—For tolerances for other spun yarns, see Tolerances D2644, Methods D179 and D738, and Specifications D541 and .

    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.


    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

    D179 Methods of Testing Cotton Tire Cords and Cord Fabrics Made from Cotton

    D541 Specification for Single Jute Yarn

    D681 Specification for Jute Rove and Plied Yarn for Electrical and Packing Purposes

    D738 Methods of Testing and Tolerances for Rope Made from Bast and Leaf Fibers

    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

    D2255 Test Method for Grading Spun Yarns for Appearance

    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

    D2644 Tolerances for Yarns Spun on the Woolen System

    D4849 Terminology Related to Yarns and Fibers


    ICS Code

    ICS Number Code 59.060.10 (Natural fibres)

    UNSPSC Code

    UNSPSC Code 11151702(Cotton yarn)


    DOI: 10.1520/D2645-07R12

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