ASTM_B_740_-_09_2015.pdf

Designation:B74009(Reapproved 2015)Standard Specification forCopper-Nickel-Tin Spinodal Alloy Strip1This standard is issued under the fixed designation B740;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification establishes requirements for copper-nickel-tin alloy strip in the following alloys:Copper Alloy UNS No.Nominal Composition Weight%CopperNickelTinC727008596C7290077158C7265087.57.551.2 UnitsThe values stated in inch-pound units and thevalues stated in SI units in Table 5 are to be regarded asstandard,except for grain size which is stated in metric unitsonly.The values given in parentheses are mathematical con-versions to SI units and are provided for information only andare not considered standard.1.3 The following safety hazard caveat pertains only to thetest method(s)described in this specification.1.3.1 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 dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate,Sheet,Strip,and RolledBarB598 Practice for Determining Offset Yield Strength inTension for Copper AlloysB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB820 Test Method for Bend Test for Determining the Form-ability of Copper and Copper Alloy StripB846 Terminology for Copper and Copper AlloysE3 Guide for Preparation of Metallographic SpecimensE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE75 Test Methods for Chemical Analysis of Copper-Nickeland Copper-Nickel-Zinc Alloys(Withdrawn 2010)3E290 Test Methods for Bend Testing of Material for Ductil-ityE478 Test Methods for Chemical Analysis of Copper Alloys3.General Requirements3.1 The following sections of Specification B248 constitutea part of this specification:3.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Dimensions and Permissible Variations,3.1.4 Workmanship,Finish,and Appearance,3.1.5 Sampling,3.1.6 Significance of Numerical Limits,3.1.7 Inspection,3.1.8 Rejection and Rehearing,3.1.9 Certification,3.1.10 Test Reports,and3.1.11 Packaging and Package Marking.3.2 In addition,when a section with a title identical to thatreferenced in 3.1 above appears in this specification,it containsadditional requirements that supplement those appearing inSpecification B248.4.Terminology4.1 For definitions of terms related to copper and copperalloys,refer to Terminology B846.5.Ordering Information5.1 Include the following information when placing ordersfor product under this specification,as applicable:1This specification is under the ASTM Committee B05 on Copper and CopperAlloys and is the direct responsibility of Subcommittee B05.01 on Plate,Sheet,andStrip.Current edition approved May 1,2015.Published June 2015.Originallyapproved in 1984.Last previous edition approved in 2009 as B740 09.DOI:10.1520/B0740-09R15.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.1 ASTM designation and year of issue,5.1.2 Quantity,5.1.3 Copper Alloy UNS No.(see 1.1),5.1.4 Form of material:strip,5.1.5 Temper(see 8.1),5.1.6 Dimensions:thickness and width,and length ifapplicable,5.1.7 How furnished:rolls or coils,stock lengths with orwithout ends,specific lengths with or without ends,5.1.8 Type of edge other than slit,for example,roundedcorners,rounded edges,or full-rounded edges.5.1.9 When material is purchased for agencies of the U.S.Government,this shall be specified in the contract or purchaseorder,and the material shall conform to the SupplementaryRequirements Section as defined in the current edition ofSpecification B248.5.2 The following options are available and should bespecified at the time of placing of the order when required:5.2.1 Certification,if required.5.2.2 Mill test report,if required.6.Chemical Composition6.1 The material shall conform to the chemical compositionrequirements spec