ASTM_D_6320_-_D_6320M_-_10_2014.pdf

Designation:D6320/D6320M10(Reapproved 2014)Standard Test Methods forSingle Filament Hose Reinforcing Wire Made from Steel1This standard is issued under the fixed designation D6320/D6320M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover testing of single filament steelwires that are used to reinforce hose products.By agreement,these test methods may be applied to similar filaments used forreinforcing other rubber products.1.2 These test methods describe test procedures only and donot establish specifications or tolerances.1.3 These test methods cover the determinations of themechanical properties listed below:PropertySectionBreaking force(strength)7 13Yield strength7 13Elongation7 13Knot strength14 20Torsion resistance21 27Reverse bend28 34Wrap35 41Diameter42 481.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D76 Specification for Tensile Testing Machines for TextilesD123 Terminology Relating to TextilesD2969 Test Methods for Steel Tire CordsD4848 Terminology Related to Force,Deformation andRelated Properties of TextilesD6477 Terminology Relating to Tire Cord,Bead Wire,HoseReinforcing Wire,and Fabrics3.Terminology3.1 Definitions:3.1.1 For definitions of terms relating to tire cord,bead wire,hose wire,and tire cord fabrics,refer to Terminology D6477.3.1.1.1 The following terms are relevant to this standard:hose reinforcing wire,torsion resistance,yield strength.3.1.2 For definitions of terms related to force and deforma-tion in textiles,refer to Terminology D4848.3.1.2.1 The following terms are relevant to this standard:breaking force and elongation.3.1.3 For definitions of other terms related to textiles,referto Terminology D123.4.Summary of Test Method4.1 A summary of the directions prescribed for determina-tion of specific properties of hose reinforcing wire is stated inthe appropriate sections of the specific test methods that follow.5.Significance and Use5.1 The procedures for the determination of properties ofsingle-filament hose reinforcing wire made from steel areconsidered satisfactory for acceptance testing of commercialshipments of this product because the procedures are the bestavailable and have been used extensively in the trade.5.1.1 In the case of a dispute arising from differences inreported test results when using these test methods for accep-tance testing of commercial shipments,the purchaser andsupplier should conduct comparative tests to determine if thereis a statistical bias between their laboratories.Competentstatistical assistance is recommended for investigation of bias.As a minimum,two parties should take a group of testspecimens which are as homogeneous as possible and whichare from a lot of material of the type in question.The testspecimens then should be randomly assigned in equal numbersto each laboratory for testing.The average results from the twolaboratories should be compared by using an appropriatestatistical test and an acceptable probability level chosen by thetwo parties before testing is begun.If a bias is found,either itscause must be determined and corrected or the purchaser and1These test methods are under the jurisdiction of ASTM Committee D13 onTextiles and are the direct responsibility of Subcommittee D13.19 on IndustrialFibers and Metallic Reinforcements.Current edition approved May 15,2014.Published June 2014.Originallyapproved in 1998.Last previous edition approved in 2010 as D6320 10.DOI:10.1520/D6320_D6320M-10R14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 supplier must agree to interpret future test results with consid-eration to the known bias.6.Sampling6.1 Lot SampleAs a lot sample for acceptance testing,takeat random the number of reels,coils,spools,or other shippingunits of wire directed in an applicable material specification orother agreement between purchaser and supplier.Considerreels,coils,spools,or other sh