 |
| Purchase Information |
| Use this form to request purchase information on ASTM online subscriptions. |
|
|
Document ASTM D 1578 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
ASTM D 1578 Document Information:
Title
Standard Test Method for Breaking Strength of Yarn in Skein Form
ASTM International
Publication Date:
Jul 15, 1993
Scope:
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.
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.
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.
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.
Option 2—Fifty turns on a 1.00-m or 1-yd reel, broken at 300 mm/min or 12 in./min.
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 5.6). ISO uses a 1-m circumference reel.
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.
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.
Keywords:
- yarn
- breaking strength
- skein
- skein break factor
- breaking tenacity
- strand
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
