ASTM-D2256 2008

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D2256-02(2008) Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method

Published By	Publication Date	Number of Pages
ASTM	2008	14

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Categories: 59.080.20 - Yarns, ASTM

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Description

ASTM D2256-02-Reapproved2008

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

ASTM D2256

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 D 885, 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.

Keywords

breaking strength; elongation; yarns; Acceptance criteria/testing–textile fabrics/fibers; Breaking strength/tenacity–textile fabrics/fibers; Elongation–textiles; Force-elongation curves; Secant modulus; Single-strand method; Tensile properties/testing–textile materials/applications; Toughness; Yarn properties

ICS Code

ICS Number Code 59.080.20 (Yarns)

DOI: 10.1520/D2256-02R08

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method
2	Significance and Use
3	Apparatus and Reagents Sampling
4	Conditioning of Specimens Rate of Operation and Gage Length Configurations of Test Specimens
5	Testing Conditions Measurement of Tensile Properties
6	Breaking Force Breaking Tenacity Elongation Initial Modulus Chord Modulus Breaking Toughness
7	Average Values Report Precision and Bias Keywords
8	TABLE 1
9	TABLE 2
10	TABLE 3
11	A1. DIRECTION OF KNOTS A1.1 A1.2 A1.3 X1. INITIAL MODULUS X1.1 X1.2 FIG. A1.1 FIG. A1.2
12	FIG. X1.1 FIG. X1.2
13	X2. CHORD MODULUS X2.1 FIG. X2.1

Additional information

Standard Title	D2256-02(2008) Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
Published Code	ASTM
Publication Date	2008
Pages Count	14
ICS Codes	59.080.20 - Yarns