ASTM-D2256/D2256M 2021(Redline)

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

Published By	Publication Date	Number of Pages
ASTM	2021

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Categories: 59.080.20 - Yarns, ASTM

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Description

ASTM D2256/D2256M-21

Redline Standard: Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method

ASTM D2256/D2256M

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.

Keywords

breaking strength; elongation; yarns;

ICS Code

ICS Number Code 59.080.20 (Yarns)

DOI: 10.1520/D2256_D2256M-21

Additional information

Standard Title	D2256/D2256M-21 Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method (Redline)
Published Code	ASTM
Publication Date	2021
ICS Codes	59.080.20 - Yarns