ASTM D861-07(2018) PDF

Scope: 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, and so forth), 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 D2260. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D861-07(2018) Referenced Document

ASTM D123 Standard Terminology Relating to Textiles*， 2023-09-14 Update
ASTM D2260 Standard Tables of Conversion Factors and Equivalent Yarn Numbers Measured in Various Numbering Systems
ASTM D4849 Standard Terminology Related to Yarns and Fibers*， 2021-06-15 Update
ISO 2947 Textiles; Integrated conversion table for replacing traditional yarn numbers by rounded values in the Tex System

2018 ASTM D861-07(2018) Standard Practice for Use of the Tex System to Designate Linear Density of Fibers, Yarn Intermediates, and Yarns
2007 ASTM D861-07(2013) Standard Practice for Use of the Tex System to Designate Linear Density of Fibers, Yarn Intermediates, and Yarns
2007 ASTM D861-07 Standard Practice for Use of the Tex System to Designate Linear Density of Fibers, Yarn Intermediates, and Yarns
2001 ASTM D861-01a Standard Practice for Use of the Tex System to Designate Linear Density of Fibers, Yarn Intermediates, and Yarns
2001 ASTM D861-01 Standard Practice for Use of the Tex System to Designate Linear Density of Fibers, Yarn Intermediates, and Yarns
1995 ASTM D861-95 Standard Practice for Use of the Tex System to Designate Linear Density of Fibers, Yarn Intermediates, and Yarns