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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 5 to 10 mN/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, secant 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, asbestos, glass, flax, hemp, ramie, and kraft paper and for specific products; namely, tire cords and rope, have been published: Test Method D 885, Specification D 299, and Specification D 578.
Note 2-For directions covering the determination of breaking force of yarn by the skein method refer to Test Method D 1578.
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.
D76 Specification for Tensile Testing Machines for Textiles
D123 Terminology Relating to Textiles
D578 Specification for Glass Fiber Strands
D885 Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-Base Fibers
D1578 Test Method for Breaking Strength of Yarn in Skein Form
D1776 Practice for Conditioning and Testing Textiles
D2258 Practice for Sampling Yarn for Testing
D2904 Practice for Interlaboratory Testing of a Textile Test Method that Produces Normally Distributed Data
D2906 Practice for Statements on Precision and Bias for Textiles
D4848 Terminology Related to Force, Deformation and Related Properties of Textiles
D4849 Terminology Related to Yarns and Fibers
E178 Practice for Dealing With Outlying Observations
ICS Number Code 59.080.20 (Yarns)
UNSPSC Code 11151700(Yarns)
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ASTM D2256-97, Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method, ASTM International, West Conshohocken, PA, 1997, www.astm.orgBack to Top