ASTM D2256/D2256M-21
Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method

Standard No.

ASTM D2256/D2256M-21

Release Date

2021

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D2256/D2256M-21

Scope

1.1 This test method covers the determination of tensile properties of monofilament, multifilament, and spun yarns, either single, plied, or cabled with the exception of yarns that stretch more than 5.0 % when tension is increased from 0.05 to 1.0 cN/tex [0.5 to 1.0 gf/tex]. 1.2 This test method covers the measurement of breaking force and elongation of yarns and includes directions for the calculation of breaking tenacity, initial modulus, chord modulus, and breaking toughness. 1.2.1 Options are included for the testing of specimens in: (A) straight, (B) knotted, and (C) looped form. 1.2.2 Conditions of test are included for the testing of specimens that are: (1) conditioned air, (2) wet, not immersed, (3) wet, immersed, (4) oven-dried, (5) exposed to elevated temperature, or (6) exposed to low temperature. NOTE 1—Special methods for testing yarns made from specific fibers; namely, glass, flax, hemp, ramie, and kraft paper and for specific products; namely, tire cords and rope, have been published: Test Methods D885, and Specification D578. NOTE 2—For directions covering the determination of breaking force of yarn by the skein method refer to Test Method D1578. 1.3 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. 1.4 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 D2256/D2256M-21 Referenced Document

• ASTM D123 Standard Terminology Relating to Textiles*， 2023-09-14 Update
• ASTM D1578 Standard Test Method for Breaking Strength of Yarn in Skein Form*， 2022-02-01 Update
• ASTM D1776 Standard Practice for Conditioning and Testing Textiles
• ASTM D2258 Standard Practice for Sampling Yarn for Testing
• ASTM D2904 Standard Practice for Interlaboratory Testing of a Textile Test Method that Produces Normally Distributed Data
• ASTM D2906 Standard Practice for Statements on Precision and Bias for Textiles
• ASTM D4848 Standard Terminology Related to Force, Deformation and Related Properties of Textiles
• ASTM D4849 Standard Terminology Related to Yarns and Fibers
• ASTM D578 Standard Specification for Glass Fiber Strands*， 2024-04-21 Update
• ASTM D76/D76M Standard Specification for Tensile Testing Machines for Textiles
• ASTM D885 Standard Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Man-Made Organic-Base Fibers
• ASTM E178 Standard Practice for Dealing With Outlying Observations

ASTM D2256/D2256M-21 history

• 2021 ASTM D2256/D2256M-21 Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
• 2010 ASTM D2256/D2256M-10(2015) Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
• 2010 ASTM D2256/D2256M-10e1 Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
• 2010 ASTM D2256/D2256M-10 Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
• 2009 ASTM D2256/D2256M-09 Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
• 2002 ASTM D2256-02(2008) Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
• 2002 ASTM D2256-02 Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
• 1997 ASTM D2256-97 Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method