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  • ASTM
    D2970/D2970M-04 Standard Test Method for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments
    Edition: 2004
    $93.60
    Unlimited Users per year

Description of ASTM-D2970 2004

ASTM D2970/D2970M-04

Historical Standard: ASTM D2970/D2970M-04 Standard Test Method for Testing Tire Cords, Tire Cord Fabrics, and Industrial Yarns Made From Glass Filaments

SUPERSEDED (see Active link, below)




ASTM D2970 / D2970M

1. 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:

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.

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


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

D578 Specification for Glass Fiber Strands

D885 Test Methods for Tire Cords, Tire Cord Fabrics, and Industrial Filament Yarns Made from Manufactured Organic-Base Fibers

D1423 Test Method for Twist in Yarns by Direct-Counting

D2258 Practice for Sampling Yarn for Testing

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

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

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


Keywords

catenary length; dip pick-up; fabric; glass; glass fibers; industrial yarn; tensile properties/tests; tire cord; Glass filaments/fibers; Industrial yarns; Tire cords and tire cord fabrics ;


ICS Code

ICS Number Code 83.160.01 (Tyres in general)


DOI: 10.1520/D2970_D2970M-04

ASTM International is a member of CrossRef.


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ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

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