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ASTM D1578-93(2006)e1

Historical Reaffirmation

Standard Test Method for Breaking Strength of Yarn in Skein Form

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1.1 This test method covers the determination of the breaking strength of yarn in skein form. The observed breaking strength is expressed in units of force, and equations are provided to convert breaking strength to skein breaking tenacity and to skein break factor. Note 1 For the determination of the breaking strength and elongation of yarn by the single strand method, refer to Test Method D 2256.

1.2 This test method is applicable to spun yarns, either single or plied, composed of any fiber or blend of fibers, but is not suitable for yarns which stretch more than 5 % when the tension is increased from 2.5 to 7.5 mN/tex or 0.03 to 0.08 gf/denier.

1.3 This test method provides three options based on the perimeter of the reel, the number of wraps in the skein, and the machine speed or time-to-break.

1.3.1 Option 1 Eighty, forty, or twenty turns on a 1.50-m or 1.5-yd reel, broken at 300 mm/min or 12 in./min.

1.3.2 Option 2 Fifty turns on a 1.00-m or 1-yd reel, broken at 300 mm/min or 12 in./min.

1.3.3 Option 3 Fifty turns on a 1-m reel, broken in 20 s. Note 2 Option 1 is in general use in the United States, Option 2 is used for woolen yarns, and Option 3 has been proposed in the International Standards Organization (ISO) for international use.

Note 3

Metric reels are available with 1 and 1.125-m circumferences. Data from the two reels will be about 1 % different (see ). ISO uses a 1-m circumference reel.

1.4 This test method is frequently combined with the determination of linear density carried out on the same skeins. Special precautions for reeling such skeins are noted.

1.5 Where appropriate, this test method states all requirements in SI units. The traditional units are inch-pound and are exact values.

This standard does not purport to address all of the safety problems, 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.


SDO ASTM: ASTM International
Document Number D1578
Publication Date June 1, 2006
Language en - English
Page Count 8
Revision Level 93(2006)e1
Supercedes
Committee D13.58
Publish Date Document Id Type View
July 15, 1993 D1578-93 Revision
Feb. 1, 2022 D1578-93R22 Reaffirmation
Jan. 1, 2016 D1578-93R16 Reaffirmation
May 1, 2011 D1578-93R11 Reaffirmation
June 1, 2006 D1578-93R06E01 Reaffirmation
July 15, 1993 D1578-93R00 Reaffirmation