ASTM D204

Acceptance Testing—The test methods in Test Methods D 204 for the determination of the properties of sewing thread are considered satisfactory for acceptance testing of commercial shipments of sewing thread, unless specified in the individual test method. These test methods are the best available and are used extensively in the trade.

4.1.1 If there are differences of practical significance between reported test results for two laboratories (or more) comparative test should be performed to determine if there is a statistical bias between them using competent statistical assistance. As a minimum, use the samples for such a comparative tests that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias.

1. Scope

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

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

1.2 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.

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

Note 1—For methods covering tests on prepared seams, refer to Test Methods D 1683 and D 3940.

1.4 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.

1.5 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.

2. Referenced Documents

D 123 Terminology Relating to Textiles
D 1422 Test Method for Twist in Single Spun Yarns by the Untwist-Retwist Method
D 1423 Test Method for Twist in Yarns by Direct-Counting
D 1776 Practice for Conditioning and Testing Textiles
D 1907 Test Method for Linear Desnisty (Yarn Number) by the Skein Method
D 2256 Test Method for Tensile Properties of Yarns by the Single-Strand Method
D 2258 Practice for Sampling Yarn for Testing
D 2724 Test Methods for Bonded, Fused, and Laminated Apparel Fabrics
D 3693 Specification for Labeled Length per Holder of Sewing Threads
D 3823 Practice for Determining Ticket Numbers for Sewing Threads
D 76 Specification for Tensile Testing Machines for Textiles
D1683 Test Method for Failure In Sewn Seams of Woven Fabrics
D1777 Test Method for Thickness of Textile Materials
D3940 Test Method for Bursting Strength (Load) and Elongation of Sewn Seams of Knit or Woven Stretch Textile Fabrics
D4848 Terminology of Force, Deformation and Related Properties of Textiles
D4849 Terminology Relating to Yarns and Fibers
D6193 Practice for Stitches and Seams
Evaluation Procedure 1, Gray Scale for Color Change
Evaluation Procedure 3, Chromatic Transference Scale
Test Method135 Dimensional Changes in Automatic Home Laundering of Woven and Knit Fabrics

Index Terms

breaking strength; strand; colorfastness; diameter; dimensional change; length; sewing thread; textile strand; twist; twist balance; yarn number; ICS Number Code 59.080.20

Citing ASTM Standards

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