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1.1 This practice covers the use of the tex system to designate the linear density (number, or count) of fibers and of yarns made from any type of fiber or combination of fibers. It is also applicable to other textile materials, including yarn intermediates (slivers, rovings, tops, etc.), single or plied yarns, cords, and threads.
Note 1—The mass per unit length concept of linear density is applicable to any material which has a high ratio of length to cross section.
1.2 Conversion factors for various indirect and direct yarn numbers to exact tex equivalents can be found in Standard Tables D 2260.
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.
ISO StandardsISO 2947
D123 Terminology Relating to Textiles
D2260 Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems
D4849 Terminology Related to Yarns and Fibers
ICS Number Code 59.080.20 (Yarns)
UNSPSC Code 11151700(Yarns); 11151500(Fibers)
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ASTM D861-01a, Standard Practice for Use of the Tex System to Designate Linear Density of Fibers, Yarn Intermediates, and Yarns, ASTM International, West Conshohocken, PA, 2001, www.astm.orgBack to Top