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This test method covers the determination of the yarn number of all types of cotton, woolen, worsted, and man-made fiber yarns taken from packages; or from any textile fabrics in which the yarns are intact and can be removed in measurable lengths.
Formerly under the jurisdiction of Committee D13 on Textiles and Subcommittee D13.58 on Yarns and Fibers, this test method was withdrawn in July 2010 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
1.1 This test method covers the determination of the yarn number of all types of cotton, woolen, worsted, and man-made fiber yarns taken from packages; or from any textile fabrics in which the yarns are intact and can be removed in measurable lengths. The test method is not applicable to yarns taken from napped or cut pile fabrics. Because this method is based on short-length specimens, the results should only be considered as approximations of yarn number.
Note 1—For a more precise procedure for the determination of yarn number, refer to Test Method D 1907.
Note 2—The following additional methods for the determination of yarn number have been approved for yarns made from specific fibers: Specifications D 541, D 578, and D 681.
1.2 This test method is applicable to yarns which stretch less than 5 % when tension on yarn is increased from 0.25 to 0.75 cN/tex (0.25 to 0.75 gf/tex). By mutual agreement it may be adapted to yarns which stretch more than 5 % by use of tension lower than that specified in the method for elastomers or use of tension higher than that specified in the method to pull the crimp out of textured yarns.
1.3 The values stated in SI units are to be regarded as standard; the values in inch-pound units are reported as information only.
1.4 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.
D123 Terminology Relating to Textiles
D541 Specification for Single Jute Yarn
D578 Specification for Glass Fiber Strands
D629 Test Methods for Quantitative Analysis of Textiles
D681 Specification for Jute Rove and Plied Yarn for Electrical and Packing Purposes
D1423 Test Method for Twist in Yarns by the Direct-Counting
D1776 Practice for Conditioning and Testing Textiles
D1907 Test Method for Yarn Number by the Skein Method
D2258 Practice for Sampling Yarn for Testing
ASTM D1059-01, Standard Test Method for Yarn Number Based on Short-Length Specimens (Withdrawn 2010), ASTM International, West Conshohocken, PA, 2001, www.astm.orgBack to Top