ASTM_B_965_-_09_2014.pdf

Designation:B96509(Reapproved 2014)Standard Specification forHigh Performance Tin-Coated Annealed Copper WireIntended for Electrical and Electronic Application forSolderability1This standard is issued under the fixed designation B965;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 tin-coated annealed copperwire intended for electrical and electronic applications wheresolderability is a requirement.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.1.2.1 ExceptionsThe SI values for density,resistivity,andvolume are to be regarded as 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 ASTM Standards:2B49 Specification for Copper Rod Drawing Stock for Elec-trical PurposesB193 Test Method for Resistivity of Electrical ConductorMaterialsB258 Specification for Nominal Diameters and Cross-SectionalAreas ofAWG Sizes of Solid Round Wires Usedas Electrical Conductors2.2 Other Standards:IPC/ECA J-STD-002 Solderability Test for ComponentLeads,Lugs,Terminals and Wires3NBS Handbook 100 Copper Wire Tables43.Ordering Information3.1 Orders for material under this specification shall includethe following information:3.1.1 Quantity of each size,3.1.2 Wire size-diameter in inches(see 5.3 and Table 1),3.1.3 Type of copper,if special(see 4.2),3.1.4 Package size(see 10.1),3.1.5 Special packaging marking,if required,and3.1.6 Place of inspection(see 7.1).4.Material4.1 Tin for CoatingThe tin shall be electroplated for thecoating and shall be commercially pure(Explanatory Note 1).For purposes of this specification,the tin shall be consideredcommercially pure if the total of other elements,exclusive ofcopper,does not exceed 1%.Not withstanding the previoussentence,chemical analysis of the tin coating or of the tin usedfor coating shall not be required under this specification.4.2 Copper-Base MetalThe base metal shall be copper ofsuch quality and purity that the finished product shall haveproperties and characteristics prescribed in this specification.NOTE1Specification B49 defines copper suitable for use.5.General Requirements(See Section 8)5.1 Tensile Strength and Elongation(Explanatory Note4)The tinned wire shall conform to the requirements forelongation prescribed in Table 1.No requirements for tensilestrength are specified.For wire whose nominal diameter ismore than 0.001 in.(0.025 mm)greater than a size listed inTable 1,but less than that of the next larger size,therequirements of the next larger size shall apply.5.2 Resistivity(Explanatory Note 1 and Note 3)The elec-trical resistivity of tinned wire at a temperature of 20C shallnot exceed the values prescribed in Table 2.1This test method is under the jurisdiction of ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.04 onConductors of Copper and Copper Alloys.Current edition approved Sept.1,2014.Published September 2014.Originallyapproved in 2009.Last previous edition approved in 2009 as B965 09.DOI:10.1520/B0965-09R14.2For 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.3Available from IPC,3000 Lakeside Drive,Suite 309S,Bannockburn,IL 60015,http:/www.ipc.org,and ECA 2500 Wilson Blvd.,Arlington,VA 22201,http:/www.ec-central.org.4Available from National Technical Information Service(NTIS),5285 PortRoyal Rd.,Springfield,VA 22161,http:/www.ntis.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3 Dimensions and Permissible Variations(ExplanatoryNote 2)The wire sizes shall be expressed as the diameter ofthe wire in decimal fractions of an inch to the nearest 0.0001 in.(0.0025 mm).The tin-coated wire shall not vary from thespecified diameter by more than the amounts prescribed inTable 3.5.4 Continuity of CoatingThe tin coating shall be continu-ous.The continuity of coating on the wire shall be determinedon representative samples taken before stranding or insulating.The continuity of tinning shall be determined by the hydro-chloric acid-sodium polysulfide test in accordance with 6.4.5.5 Thickness of CoatingThe wire shall have adequatefree tin(Explanatory Note 1)to insure meeting solderabilityrequiremen