ASTM D 204 Standard Test Methods for Sewing Threads

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ASTM D 204 Document Information:

Title
Standard Test Methods for Sewing Threads

ASTM International

Publication Date:
Sep 10, 2002

Scope:

These test methods can be used to evaluate sewing threads of any fiber.

The test methods in this standard are intended to evaluate only sewing
thread taken from thread holders.

These test methods only provide for the measurement of sewing thread
physical properties.  These test methods do not address any other
properties that may be important for the satisfactory performance of
sewing threads under particular end use conditions.

These test methods can be used to measure the following properties:

                                                     Sections

Colorfastness to Drycleaning                         73 to 83
Colorfastness to Laundering                          62 to 72
Colorfastness to Water Migration                     84 to 94
Diameter                                             43 to 50
Length per Thread Holder                             34 to 42
Shrinkage, Single Strand                             51 to 61
  Dry Heat                                           58.1
  Boiling Water                                      58.2
Strength and Elongation                              15 to 21
  Single Strand - Conditioned                        19.1.1
  Single Strand - Wet                                19.1.2
  Loop Strength                                      19.2
  Knot Strength                                      19.3
Twist                                                22 to 27
Twist Balance                                        28 to 33
Yarn Number                                          7 to 14

NOTE 1 - For methods covering tests on prepared seams, refer to Test
Methods D1683 and D3940. (Footnote 3)

The values stated in SI units are to be regarded as standard; the
values in English units are provided as information only and are not
exact equivalents.

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.

Footnote 3 - Annual Book of ASTM Standards, Vol 07.02.

Keywords:

breaking strength, strand

colorfastness

diameter

dimensional change

length

sewing thread

textile strand

twist

twist balance

yarn number

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