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ASTM D 2256 Document Information:
Title
Standard Test Method for Tensile Properties of Yarns by the Single-Strand Method
ASTM International
Publication Date:
Sep 10, 2002
Scope:
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).
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.
Options are included for the testing of specimens in: (A)
straight, (B) knotted, and (C) looped form.
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 Method 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.
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
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