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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, rayon, and aramid 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 D 885.

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 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:

SectionAdhesion of Cord to Elastomers34Bibliography of Tire Cord Test MethodsX5Breaking Strength (Force) of Yarns and Cords at Elevated Tempera-tureX2.3Breaking Strength (Force) of Conditioned Yarns and Cords16Breaking Strength (Force) of Oven-Dried Rayon Yarns and Cords23Breaking Strength (Force) of Rayon Yarns and Cords at Specified Moisture Regain Level, Adjustment of17Breaking Tenacity of Conditioned Yarns and Cords18Breaking Tenacity of Oven-Dried Rayon Yarns and Cords24Breaking Toughness of Yarns and Cords28Commercial Mass9Conditioning7Contraction of Wet Yarns and CordsX3Count of Tire Cord Fabric37Dip (Adhesive) Solids Pickup on Yarns and Cords33Elongation at Break of Conditioned Yarns and Cords19Elongation at Break of Oven-Dried Rayon Yarns and Cords25Elongation of Rayon Yarns and Cords at a Specified Moisture Regain Level, Adjustment of Observed20Extractable Matter in Yarns and Cords32Force at Specified Elongation (FASE) of Conditioned Yarns and Cords21Force at Specified Elongation (FASE) of Oven-Dried Rayon Yarns and Cords26Growth of Conditioned Yarns and CordsX1Identification of Fibers8Keywords40Linear Density11Mass of per Unit Area of Tire Cord Fabric36Modulus of Conditioned Yarns and Cords22Moisture Regain, Actual10Precision and Bias of Certain Yarn and Cord Tests39 35 toProperties of Tire Cord Fabric38Sampling6Shrinkage Force of Conditioned Yarns and Cords at Elevated TemperatureX2.5Shrinkage of Conditioned Yarns and Cords at Elevated TemperatureX2.4Significance and Use, General5Significance and Use, Tensile Properties14SI Calculations (examples for work-to-break, specific work-to-break, and breaking toughness)X4Stiffness of Fabric38 12 to Tensile Properties of Yarns and Cords28Terminology3Thickness of Cords31Twist in Yarns and Cords30Width of Tire Cord Fabric35Work-to-Break of Yarns and Cords27

1.5 These test methods show the values in both SI and inch-pound units. SI units is the technically correct name for the system of metric units known as the International System of Units. Inch-pound units is the technically correct name for the customary units used in the United States. The values stated in either acceptable metric units or other units shall be regarded separately as standard. The values expressed in each system may not be exact equivalents; therefore, each system must be used independently of each other, without combining values in any way.

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.