Standard Test Methods for Steel Tire Cords

SIGNIFICANCE AND USE
The procedures in Test Methods D 2969 for the determination of the properties of steel tire cord and related materials are considered satisfactory for acceptance testing of commercial shipments of such products because the procedures are the best available and have been used extensively in the trade. When a purchaser frequently uses a specific supplier, it is recommended that the two parties investigate the methods to determine if there is any bias between their two laboratories as directed in 5.1.1.
5.1.1 In case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and that are from a lot of material of the type in question. Test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using the appropriate statistical analysis and an acceptable probability level chosen by the two parties before testing is begun. If bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results with consideration to the known bias.
The significance and use of particular properties are discussed in the appropriate sections.
SCOPE
1.1 These test methods cover the testing of cords made from steel that are specifically designed for use in the reinforcement of pneumatic tires. By agreement, these test methods may be used to test similar cords or filaments used for reinforcing other rubber products. The steel cords may be wound on spools or beams. The steel cords may also be woven into fabric, in which case they must be removed from the fabric prior to testing.Note 1
For other methods of testing tire cords and tire cord fabrics, refer to Methods D 885, Test Methods D 1871, Specifications D 122, and Test Methods D 2692 and D 2970. For tolerances on tire cords and tire cord fabrics, refer to Specifications D 122 and Methods D 885.
1.2 These test methods include test procedures only; they do not establish specifications or tolerances.
1.3 This test method includes the following sections:SubjectSectionAdhesion of Steel Cords and Filaments to ElastomersBrass Coating Composition and Mass, Breaking Force (Strength)ConstructionData Form for Reporting Test ResultsElongation at BreakElongation Between Defined Forces (EDF)FlareLayLinear DensityVisual AppearanceNomenclature SystemResidual TorsionsStraightnessThickness and Out-of-Roundness
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. See and Note 0.
1.4 This standard is written in SI units. No other units of measurement are included in this standard.

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ASTM D2969-04 - Standard Test Methods for Steel Tire Cords
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:D2969–04
Standard Test Methods for
1
Steel Tire Cords
This standard is issued under the fixed designation D2969; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 Thesetestmethodscoverthetestingofcordsmadefrom 2.1 ASTM Standards:
steel that are specifically designed for use in the reinforcement D76 Specification for Tensile Testing Machines for Textiles
of pneumatic tires. By agreement, these test methods may be D122 Specifications for Tire Fabrics Other Than Tire Cord
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usedtotestsimilarcordsorfilamentsusedforreinforcingother Fabrics
rubber products. The steel cords may be wound on spools or D123 Terminology Relating to Textiles
beams.Thesteelcordsmayalsobewovenintofabric,inwhich D885 Test Methods for Tire Cords, Tire Cord Fabrics, and
case they must be removed from the fabric prior to testing. Industrial Filament Yarns Made from Manufactured
Organic-Base Fibers
NOTE 1—For other methods of testing tire cords and tire cord fabrics,
D1777 Test Method for Thickness of Textile Materials
refer to Methods D885, Test Methods D1871, Specifications D122, and
D1871 Test Method for Adhesion Between Tire Bead Wire
Test Methods D2692 and D2970/D2970M. For tolerances on tire cords
and Rubber
and tire cord fabrics, refer to Specifications D122 and Methods D885.
D2229 Test Method forAdhesion Between SteelTire Cords
1.2 Thesetestmethodsincludetestproceduresonly;theydo
and Rubber
not establish specifications or tolerances.
D2692 Test Method for Air Wicking of Tire Fabrics, Tire
1.3 This test method includes the following sections:
Cord Fabrics, Tire Cord, and Yarns
Subject Section
D2904 Practice for Interlaboratory Testing of a Textile Test
Adhesion of Steel Cords and Filaments to Elastomers 16
Brass Coating Composition and Mass 14, 15
Method that Produces Normally Distributed Data
Breaking Force (Strength) 10
D2970/D2970M Test Methods for Testing Tire Cords, Tire
Construction 12
Cord Fabrics, and Industrial Yarns Made From Glass
Data Form for Reporting Test Results Appendix X1
Elongation at Break 10
Filaments
Elongation Between Defined Forces (EDF) 11
D4393 Test Method for Strap PeelAdhesion of Reinforcing
Flare 8
Cords or Fabrics to Rubber Compounds
Lay 12
Linear Density 9
D6477 Terminology Relating to Tire Cord, Bead Wire,
Visual Appearance 8
Hose Reinforcing Wire, and Fabrics
Nomenclature System Annex A1
4
E663 Practice for Flame Atomic Absorption Analysis
Residual Torsions 8
Straightness 8
2.2 International Bureau for the Standardization of Man-
Thickness and Out-of-Roundness 13
Made Fibers (BISFA):
1.4 This standard does not purport to address all of the Internationally Agreed Methods for Testing Steel Tire
5
safety concerns, if any, associated with its use. It is the Cords
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. See 14.3 and Note 3.1 Definitions:
3.1.1 Fordefinitionsoftermsrelatingtotirecord,beadwire,
11.
1.5 This standard is written in SI units. No other units of hose wire, and tire cord fabrics, refer to Terminology D6477.
measurement are included in this standard.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
1
These test methods are under the jurisdiction of ASTM Committee D13 on Standards volume information, refer to the standard’s Document Summary page on
Textiles and are the direct responsibility of Subcommittee D13.19 on Tire Cord and the ASTM website.
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Fabrics.
Discontinued. See 1993 Annual Book of ASTM Standards, Vol 07.01.
4
Current edition approved Oct. 1, 2004. Published October 2004. Originally
Discontinued. See 1996 Annual Book of ASTM Standards, Vol 03.06.
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published as D2969 – 71 T. Last previous edition D2969 – 02. DOI: 10.1520/ Available from BISFA, Lauren Garten Strasse 12, PO Box, CH-4010 BASLE
D2969-04. Switzerland.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D2969–04
3.1.1.1 The following terms are relevant to this standard: 6.2.1 For cords, take at random the number of spools or
core, direction of lay, flare, high elongation, in steel tire cord, other packages per carton as directed in the applicable material
length of lay, residual torsion, steel cord, steel cord wrap, steel specification or other agreement between the purchaser and the
filaments, steelstrand, straight
...

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