ASTM_D_1059_-_01.pdf

Designation:D 1059 01Standard Test Method forYarn Number Based on Short-Length Specimens1This standard is issued under the fixed designation D 1059;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the yarnnumber of all types of cotton,woolen,worsted,and man-madefiber yarns taken from packages;or from any textile fabrics inwhich the yarns are intact and can be removed in measurablelengths.The test method is not applicable to yarns taken fromnapped or cut pile fabrics.Because this method is based onshort-length specimens,the results should only be consideredas approximations of yarn number.NOTE1For a more precise procedure for the determination of yarnnumber,refer to Test Method D 1907.NOTE2The following additional methods for the determination ofyarn 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 lessthan 5%when tension on yarn is increased from 0.25 to 0.75cN/tex(0.25 to 0.75 gf/tex).By mutual agreement it may beadapted to yarns which stretch more than 5%by use of tensionlower than that specified in the method for elastomers or use oftension higher than that specified in the method to pull thecrimp out of textured yarns.1.3 The values stated in SI units are to be regarded asstandard;the values in inch-pound units are reported asinformation only.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:D 123 Terminology Relating to Textiles2D 541 Specification for Single Jute Yarn3D 578 Specification for Glass Fiber Strands2D 629 Test Methods for Quantitative Analysis of Textiles2D 681 Specification for Jute Rove and Plied Yarn forElectrical and Packing Purposes2D 1423 Test Method for Twist in Yarns by the Direct-Counting2D 1776 Practice for Conditioning and Testing Textiles2D 1907 Test Method for Yarn Number by the SkeinMethod2D 2258 Practice for Sampling Yarn for Testing23.Terminology3.1 Definitions:3.1.1 cotton count,nan indirect yarn numbering systemgenerally in the cotton system equal to the number of 840-ydlengths of yarn per pound.3.1.2 cut,nin asbestos and glass yarns,the number of100-yd lengths of yarn per pound;an indirect yarn numberingsystem.3.1.3 cut,nin wool yarns,the number of 300 yd lengths ofyarn per pound;an indirect yarn numbering system.3.1.4 denier,na unit of linear density,equal to the mass ingrams per 9000 m of fiber yarn,or other textile strand that isused in direct yarn numbering system.(See also linear density.)3.1.5 direct yarn numbering system,na system that ex-presses yarn linear density(number).(See also denier,spyndlenumber,and tex.)3.1.6 grex,nan obsolete direct numbering system for fiberyarn,or other textile strand equal to the mass in grams per10 000 m.(See also linear density.)3.1.7 indirect yarn numbering system,na system thatexpresses yarn as the reciprocal linear density(number).(Seealso cotton count,metric count,worsted count,cut,and run.)3.1.8 lea,nin cotton yarns,the number of 120-yd lengthsof yarn per pound;an indirect yarn numbering system.3.1.9 lea,nin linen yarns,the number of 300-yd lengthsof yarn per pound;an indirect yarn numbering system.3.1.10 linear density,nfor fiber and yarn,mass per unitlength.3.1.11 metric count,nan indirect yarn numbering systemfor sliver roving,and yarn,equal to the number of 1000 m perkilogram.3.1.12 run,nin the American woolen system,the numberof 1600-yd lengths of yarn per pound;an indirect yarnnumbering system generally used for yarns spun on the woolensystem.1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.58 on Yarn and Fiber TestMethods.Current edition approved September 10,2001.Published November 2001.Originally published as D 1059 49 T.Last previous edition D 1059 97.2Annual Book of ASTM Standards,Vol 07.01.3Discontinued;see 1996 Annual Book of ASTM Standards,Vol 07.01.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.3.1.13 tex,nthe unit of linear density,equal to the mass ingrams of 1000 metres of fiber,or other textile strand that isused in a direct yarn numbering system.(See also lineardensity and direct yarn numbering system.)3.1.14 typp,nan obsolete indirect yarn numbering systemequal to the number of 1000-yd lengths per pound.3.1.15 worsted count,nan indirect yarn numbering sys-tem in the worsted system equal to the num