1.1 This standard covers the testing of industrial yarns wholly made of manufactured organic-based fibers; twisted cords made of these yarns; fabrics woven from these twisted cords; and other structures made specifically for use in manufacture of pneumatic tires.

1.1.1 These test methods can also be applicable when these yarn structures are used for reinforcing other rubber goods and fabrics made with these cords.

1.1.2 The test methods are relevant for evaluating various yarns: nylon, polyester, and rayon yarns; tire cords twisted from these yarns, and fabrics made from these yarns.

1.2 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.

1.3 This standard includes the following sections:

Section Adhesion of Cord to Elastomers 34 Bibliography of Tire Cord Test Methods Appendix X5 Breaking Strength (Force) of Yarns and Cords
at Elevated Temperature X2.3 Breaking Force of Conditioned Yarns and Cords 16 Breaking Force of Oven-Dried Rayon Yarns and Cords 23 Breaking Strength 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 Appendix 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 Appendix 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 Properties of Tire Cord Fabric 35 to 38 Sampling 6 Shrinkage Force of Conditioned Yarns and Cords
at Elevated Temperature
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) Appendix X4 Stiffness of Fabric 38 Tensile Properties of Yarns and Cords 12 to 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

1.4 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.

1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.