ASTM_B_941_-_16.pdf

Designation:B94116Standard Specification forHeat Resistant Aluminum-Zirconium Alloy Wire for ElectricalPurposes1This standard is issued under the fixed designation B941;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers heat resistant aluminum-zirconium alloy round wire for electrical purposes.There is afamily of aluminum-zirconium alloys that are used for heat-resistance(that is,resist annealing),which differ by zirconiumcontent,tensile strength,electrical conductivity,and maximumuse temperature.This standard covers one currently commer-cially applicable alloy from this family.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 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 The following documents of the issue in effect on thedate of material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2B193 Test Method for Resistivity of Electrical ConductorMaterialsB557 Test Methods for Tension Testing Wrought and CastAluminum-and Magnesium-Alloy ProductsB830 Specification for Uniform Test Methods and Fre-quency3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 lota group of production units,up to 30 000 1b 15000 kg of mass,of one type and size of wire,which wasproduced during the same time period,under similar produc-tion conditions,and.is presented for acceptance at the sametime(Explanatory Notes 1 and 2).3.1.2 production unita coil,reel,spool,or other packageof wire that represents a single usable length.3.1.3 samplethe production unit(s)from which a testspecimen(s)has been removed,and which is considered tohave properties representative of the lot.3.1.4 specimena length of wire removed for test purposes.4.Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity of each size,4.1.2 Wire size(see 11.1 and 11.2),4.1.3 Special tension test,if required(see 6.1,6.2 and 7.1),4.1.4 Frequency of bending test(see 8.1 and 14.7),4.1.5 Special jointing procedures,if permitted(see 12.1),4.1.6 Place of inspection(see 16.2),4.1.7 Package size and type(see 17.1),4.1.8 Special package marking,if required(see 17.4).5.Materials and Manufacture5.1 The aluminum wire shall be made from drawing stock.The rod shall have properties such that once drawn into wire,the wire properties set forth in Table 1 are met.5.2 The wire shall be aluminum-zirconium alloy of suchquality and purity that the finished product shall have theproperties and characteristics prescribed in this specification,including tensile,elongation,heat resistance properties,bend-ing properties,and electrical resistivity.Chemical analysis of aspecific alloy is not a requirement of this specification unlessdefinite agreement is reached between the manufacturer andthe purchaser on individual orders.6.Tensile Properties6.1 Tensile Strength and ElongationThe wire shall con-form to the tensile strength and elongation requirements setforth in Table 1(Explanatory Note 3).1This specification is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.07 onConductors of Light Metals.Current edition approved April 1,2016.Published May 2016.Originallyapproved in 2010.Last previous edition approved in 2010 as B941 10.DOI:10.1520/B0941-16.2For 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 6.2 When requested by the purchaser,tension tests shall bemade of specimens of wire containing joints made in thedrawing stock or in the wire prior to final drawing.Such testsshall indicate tensile strengths not less than 90%of the valuesfor individual tests shown in Section 6.1.7.Heat Resistance7.1 Heat resistance tests(see section 14.4)shall indicatestrengths not less than 90%of the values for individual testsshown in Table 1.For the smallest size group,heat resistancevalues shall not be less than 90%of the minimum strengthspecification.(Explanatory Note 5).8.Wrap Test8.1 The wire shall be free of brittleness as evidenced by itsability