ASTM D1445/D1445M-12(2021)
Standard Test Method for Breaking Strength and Elongation of Cotton Fibers (Flat Bundle Method)

Standard No.

ASTM D1445/D1445M-12(2021)

Release Date

2021

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D1445/D1445M-12(2021)

Scope

1.1 This test method covers the determination of (1) the tensile strength or breaking tenacity of cotton fibers as a flat bundle using a nominal zero gauge length, or (2) the tensile strength or breaking tenacity and the elongation at the breaking load of cotton fibers as a flat bundle with 1⁄8-in. [3.2-mm] clamp spacing. This test method is applicable to loose ginned cotton fibers of untreated cottons whether taken before processing or obtained from a textile product. 1.2 This test method is designed primarily for use with special fiber bundle clamps and special strength testing instruments but may be used with other tensile strength and elongation testing machines when equipped with appropriate adapters to accommodate the fiber clamps. NOTE 1—Other methods for measuring the breaking tenacity of fiber bundles include Test Method D1294, Test for Breaking Strength of Wool Fiber Bundles—1 in gauge Length;2 and D5867, Test Method for Measurement of Physical Properties of Cotton Fibers by High Volume Instruments. 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 1 This method is under the jurisdiction of ASTM Committee D13 on Textiles and is the direct responsibility of Subcommittee D13.11 on Cotton Fibers. Current edition approved Jan. 1, 2021. Published January 2021. Originally approved in 1953. Last previous edition approved in 2012 as D1445 – 12. DOI: 10.1520/D1445_D1445M-12R21. 2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [email protected]. For Annual Book of ASTM Standards volume information, refer to the standard’s Document Summary page on the ASTM website. Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States 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. 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 D1445/D1445M-12(2021) Referenced Document

• ASTM D123 Standard Terminology Relating to Textiles*， 2023-09-14 Update
• ASTM D1294 Standard Test Method for Tensile Strength and Breaking Tenacity of Wool Fiber Bundles 1-in. (25.4-mm) Gage Length
• ASTM D1441 Standard Practice for Sampling Cotton Fibers for Testing
• ASTM D1447 Standard Test Method for Length and Length Uniformity of Cotton Fibers by Fibrograph Measurement
• ASTM D1776 Standard Practice for Conditioning and Testing Textiles
• ASTM D3025 Standard Practice for Standardizing Cotton Fiber Test Results by Use of Calibration Cotton Standards
• ASTM D5867 Standard Test Methods for Measurement of Physical Properties of Cotton Fibers by High Volume Instruments
• ASTM D7139 Standard Terminology for Cotton Fibers

ASTM D1445/D1445M-12(2021) history

• 2021 ASTM D1445/D1445M-12(2021) Standard Test Method for Breaking Strength and Elongation of Cotton Fibers (Flat Bundle Method)
• 2012 ASTM D1445/D1445M-12 Standard Test Method for Breaking Strength and Elongation of Cotton Fibers (Flat Bundle Method)
• 2005 ASTM D1445-05 Standard Test Method for Breaking Strength and Elongation of Cotton Fibers (Flat Bundle Method)
• 1995 ASTM D1445-95 Standard Test Method for Breaking Strength and Elongation of Cotton Fibers (Flat Bundle Method) (Withdrawn 2004)