ASTM-D2970 2002

$40.63

D2970-02 Standard Test Method for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments

Published By	Publication Date	Number of Pages
ASTM	2002	10

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Categories: 83.160.01 - Tyres in general, ASTM

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Description

ASTM D2970-02

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

ASTM D2970

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 D 885.

1.3 The following sections are included:

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.

1.5 These tests are used to determine the tensile properties of yarns and cords.

Keywords

catenary length; dip pick-up; fabric; glass fibers; industrial yarn; tensile properties/tests; tire cord; glass

ICS Code

ICS Number Code 83.160.01 (Tyres in general)

DOI: 10.1520/D2970-02

Additional information

Catenary Length of Cords	Appendix X1
Precision and Bias	25-27
Conditioning	8
Sampling of Tire Cord Fabric	7
Sampling of Yarn and Cord	6
Width of Tire Cord Fabric	22
Tensile Properties of Yarns and Cords	9-17
Count of Tire Cord Fabric	22
Breaking Strength (Force) of Conditioned Yarns and Cords	13
Thickness of Cords	21
Initial Modulus of Conditioned Yarns and Cords	16
Yarn Number of Dipped Yarns and Cords	19
Mass of Tire Cord Fabric	22
Dip Pick-Up (DPU) on Yarns and Cords	23
Breaking Tenacity of Conditioned Yarns and Cords	14
Terminology	3
Keywords	28
Construction of Yarns and Cords	18
Twist in Yarns and Cords	20
Elongation at Break of Conditioned Yarns and Cords	15
Adhesion of Cords to Elastomers	24
	Section
ICS Codes	83.160.01 - Tyres in general