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ASTM International - ASTM D2970/D2970M-04(2014)

Standard Test Methods for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments

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Organization: ASTM International
Publication Date: 15 May 2014
Status: active
Page Count: 10
ICS Code (Tyres in general): 83.160.01
significance And Use:

5.1 The procedures in these test methods may be used for the acceptance testing of commercial shipments, but caution is advised because technicians may fail to get good agreement between results... View More

scope:

1.1 These test methods cover the testing of industrial yarns made of glass filaments, cords twisted from such yarns, and fabric woven from such cords-products that are made specifically for use in the manufacture of pneumatic tires. By agreement, these test methods may be applied to similar glass yarns and cords used for reinforcing other rubber goods and for other industrial applications. The yarn or cord may be wound on cones, tubes, bobbins, spools, or beams, woven into fabric, or in other forms. These test methods include testing procedures only. These test methods do not include specifications or tolerances.

1.2 No procedure is included for the determination of fatigue resistance of cords, but several articles relating to the measurement of fatigue resistance of cords made from man-made filaments and cured in rubber were published in the bibliography of Test Methods D885.

1.3 The following sections are included:

  Section
Adhesion of Cords to Elastomers 24
Breaking Strength (Force) of Conditioned Yarns and Cords 13
Breaking Tenacity of Conditioned Yarns and Cords 14
Catenary Length of Cords Appendix X1
Conditioning 8
Construction of Yarns and Cords 18
Count of Tire Cord Fabric 22
Dip Pick-Up (DPU) on Yarns and Cords 23
Elongation at Break of Conditioned Yarns and Cords 15
Initial Modulus of Conditioned Yarns and Cords 16
Keywords 28
Mass of Tire Cord Fabric 22
Precision and Bias 25 - 27
Sampling of Yarn and Cord 6
Sampling of Tire Cord Fabric 7
Tensile Properties of Yarns and Cords 9 - 17
Terminology 3
Thickness of Cords 21
Twist in Yarns and Cords 20
Width of Tire Cord Fabric 22
Yarn Number of Dipped Yarns and Cords 19

1.4 These test methods show the values in both SI units and in 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.

1.5 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.

Document History

ASTM D2970/D2970M-04(2014)
May 15, 2014
Standard Test Methods for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments
1.1 These test methods cover the testing of industrial yarns made of glass filaments, cords twisted from such yarns, and fabric woven from such cords—products that are made specifically for use in...
January 1, 2010
Standard Test Method for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments
The procedures in these test methods may be used for the acceptance testing of commercial shipments, but caution is advised because technicians may fail to get good agreement between results on...
October 1, 2004
Standard Test Method for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments
1.1 These test methods cover the testing of industrial yarns made of glass filaments, cords twisted from such yarns, and fabric woven from such cords-products that are made specifically for use in...
September 13, 1999
Standard Test Method for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments
1.1 These test methods cover the testing of industrial yarns made of glass filaments, cords twisted from such yarns, and fabric woven from such cords-products that are made specifically for use in...
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