1.1 These test methods cover the tensile testing of aramid yarns, cords twisted from such yarns, and fabrics woven from such cords. The yarn or cord may be wound on cones, tubes, bobbins, spools, or beams; may be woven into fabric; or may be in some other form. The methods include testing procedure only and include no specifications or tolerances.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 This standard includes the following test methods: Section Breaking Force 11 Breaking Tenacity 12 Breaking Toughness 17 Elongation at Break 13 Force at Specified Elongation (FASE) 14 Linear Density 10 Modulus 15 Stress at Break 12 Work-to-Break 16
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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 D7269/D7269M-20 Referenced Document
ASTM D123 Standard Terminology Relating to Textiles*, 2023-09-14 Update
ASTM D1776 Standard Practice for Conditioning and Testing Textiles
ASTM D1907 Standard Test Method for Linear Density of Yarn (Yarn Number) by the Skein Method
ASTM D2258 Standard Practice for Sampling Yarn for Testing
ASTM D3800 Standard Test Method for Density of High-Modulus Fibers
ASTM D4848 Standard Terminology Related to Force, Deformation and Related Properties of Textiles
ASTM D6587 Standard Test Method for Yarn Number Using Automatic Tester*, 2024-04-22 Update
ASTM D76 Standard Specification for Tensile Testing Machines for Textiles
ASTM E23 Standard Test Methods for Notched Bar Impact Testing of Metallic Materials
ASTM D7269/D7269M-20 history
2020ASTM D7269/D7269M-20 Standard Test Methods for Tensile Testing of Aramid Yarns
2017ASTM D7269/D7269M-17 Standard Test Methods for Tensile Testing of Aramid Yarns
2011ASTM D7269/D7269M-11 Standard Test Methods for Tensile Testing of Aramid Yarns
2010ASTM D7269/D7269M-10 Standard Test Methods for Tensile Testing of Aramid Yarns
2008ASTM D7269-08 Standard Test Methods for Tensile Testing of Aramid Yarns
2007ASTM D7269-07 Standard Test Methods for Tensile Testing of Aramid Yarns
2006ASTM D7269-06 Standard Test Methods for Tensile Testing of Aramid Yarns