ASTM D885 / D885M - 10a(2014)

    Standard Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-Base Fibers

    Active Standard ASTM D885 / D885M | Developed by Subcommittee: D13.19

    Book of Standards Volume: 07.01


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    Significance and Use

    5.1 The procedures in these test methods should be used with caution for acceptance of commercial shipments owing to the absence of factual information on the between-laboratory precision of many of the test procedures included in these test methods. It is recommended that any program of acceptance testing be preceded by an interlaboratory check in the laboratory of the purchaser and the laboratory of the supplier on replicate specimens of the materials to be tested for each property (or properties) to be evaluated.

    5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, test samples should be used that are as homogeneous as possible, that are drawn from the material from which the disparate test results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing. Other materials with established test values may be used for this purpose. The test results from the two laboratories should be compared using a statistical test for unpaired data, at 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 must be adjusted in consideration of the known bias.

    5.2 The significance and use of particular properties are discussed in the appropriate sections of specific test methods.

    1. Scope

    1.1 These test methods cover the testing of industrial filament yarns made wholly of manufactured organic-base fibers, cords twisted from such yarns, fabrics woven from such cords, and products that are made specifically for use in the manufacture of pneumatic tires. They may be applied to similar yarns and cords used for reinforcing other rubber goods and for other industrial applications. The test methods apply to nylon, polyester, and rayon yarns and tire cords twisted from such yarns and to fabrics made from such cords. The yarn or cord may be wound on cones, tubes, bobbins, spools, or beams; may be woven into fabric; or may be in some other form. The methods include testing procedure only and include no specifications or tolerances.

    1.2 No procedure is included for the determination of fatigue resistance of cord, but several commonly used procedures for the measurement of fatigue resistance of cords in rubber were published in the appendix of these test methods in the 1967 Annual Book of ASTM Standards, Part 24, and in earlier issues of Test Methods D885.

    1.3 The sections on “Growth of Conditioned Yarns and Cords,” “Properties of Yarns and Cords at Elevated Temperature,” and “Properties of Wet Yarns and Cords” have been moved to Appendix X1 – Appendix X3 as non-mandatory informational items because of their very limited use by the industry and because precision and bias statements are not included.

    1.4 This standard includes the following sections:

     

    Section

    Adhesion of Cord to Elastomers

    34

    Bibliography of Tire Cord Test Methods

    X5

    Breaking Strength (Force) of Yarns and Cords at Elevated Tempera-
     ture

    X2.3

    Breaking Strength (Force) of Conditioned Yarns and Cords

    16

    Breaking Strength (Force) of Oven-Dried Rayon Yarns and Cords

    23

    Breaking Strength (Force) of Rayon Yarns and Cords at Specified
     Moisture Regain Level, Adjustment of

    17

    Breaking Tenacity of Conditioned Yarns and Cords

    18

    Breaking Tenacity of Oven-Dried Rayon Yarns and Cords

    24

    Breaking Toughness of Yarns and Cords

    28

    Commercial Mass

    9

    Conditioning

    7

    Contraction of Wet Yarns and Cords

    X3

    Count of Tire Cord Fabric

    37

    Dip (Adhesive) Solids Pickup on Yarns and Cords

    33

    Elongation at Break of Conditioned Yarns and Cords

    19

    Elongation at Break of Oven-Dried Rayon Yarns and Cords

    25

    Elongation of Rayon Yarns and Cords at a Specified Moisture Regain
     Level, Adjustment of Observed

    20

    Extractable Matter in Yarns and Cords

    32

    Force at Specified Elongation (FASE) of Conditioned Yarns and
     Cords

    21

    Force at Specified Elongation (FASE) of Oven-Dried Rayon Yarns and
     Cords

    26

    Growth of Conditioned Yarns and Cords

    X1

    Identification of Fibers

    8

    Keywords

    40

    Linear Density

    11

    Mass of per Unit Area of Tire Cord Fabric

    36

    Modulus of Conditioned Yarns and Cords

    22

    Moisture Regain, Actual

    10

    Precision and Bias of Certain Yarn and Cord Tests

    39

     

    35 to

    Properties of Tire Cord Fabric

    38

    Sampling

    6

    Shrinkage Force of Conditioned Yarns and Cords at Elevated Temper-
     ature


    X2.5

    Shrinkage of Conditioned Yarns and Cords at Elevated Temperature

    X2.4

    Significance and Use, General

    5

    Significance and Use, Tensile Properties

    14

    SI Calculations (examples for work-to-break, specific work-to-break,
     and breaking toughness)


    X4

    Stiffness of Fabric

    38

     

    12 to

    Tensile Properties of Yarns and Cords

    28

    Terminology

    3

    Thickness of Cords

    31

    Twist in Yarns and Cords

    30

    Width of Tire Cord Fabric

    35

    Work-to-Break of Yarns and Cords

    27


    1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

    1.6 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D76 Specification for Tensile Testing Machines for Textiles

    D123 Terminology Relating to Textiles

    D276 Test Methods for Identification of Fibers in Textiles

    D1423 Test Method for Twist in Yarns by Direct-Counting

    D1776 Practice for Conditioning and Testing Textiles

    D1777 Test Method for Thickness of Textile Materials

    D1907 Test Method for Linear Density of Yarn (Yarn Number) by the Skein Method

    D1909 Standard Table of Commercial Moisture Regains for Textile Fibers

    D2257 Test Method for Extractable Matter in Textiles

    D2258 Practice for Sampling Yarn for Testing

    D2462 Test Method for Moisture in Wool by Distillation With Toluene

    D2494 Test Method for Commercial Mass of a Shipment of Yarn or Manufactured Staple Fiber or Tow

    D2654 Test Method for Moisture in Textiles

    D3774 Test Method for Width of Textile Fabric

    D3775 Test Method for Warp (End) and Filling (Pick) Count of Woven Fabrics

    D3776 Test Methods for Mass Per Unit Area (Weight) of Fabric

    D4393 Test Method for Strap Peel Adhesion of Reinforcing Cords or Fabrics to Rubber Compounds

    D4776 Test Method for Adhesion of Tire Cords and Other Reinforcing Cords to Rubber Compounds by H-Test Procedure

    D4848 Terminology Related to Force, Deformation and Related Properties of Textiles

    D6477 Terminology Relating to Tire Cord, Bead Wire, Hose Reinforcing Wire, and Fabrics


    ICS Code

    ICS Number Code 83.160.01 (Tyres in general)

    UNSPSC Code

    UNSPSC Code 25172507(Tire cord); 11151500(Fibers)


    DOI: 10.1520/D0885_D0885M-10AR14

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