ASTM_B_206_-_B_206M_-_12_2017.pdf

Designation:B206/B206M12(Reapproved 2017)Standard Specification forCopper-Nickel-Zinc(Nickel Silver)Wire and Copper-NickelAlloy Wire1This standard is issued under the fixed designation B206/B206M;the number immediately following the designation indicates the yearof 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification establishes the requirements for wirein round,hexagonal,octagonal,rectangular,and square form ofUNS Alloy Nos.C71000,C74500,C75200,C75700,C76400,C77000,and C79200.1.2 This specification is general in that the product is used inmany applications where the requirements are too particular tobe specified by standard test results.1.2.1 For particular or critical applications it is advisable forthe purchaser to submit samples or drawings to the manufac-turer to secure an adjustment of anneal or temper to suit theapplication for which the product is intended.1.3 The following information is intended to assist thepurchaser in the application of this specification:1.3.1 For most general applicationsUNS Alloy Nos.C71000,C74500,C75200,and C75700.1.3.2 For hard or spring tempersUNS Alloy Nos.C76400and C77000.1.3.3 For ease of machiningUNS Alloy No.C79200.1.4 UnitsValues stated in either inch-pound units or SIunits are to be regarded separately as standard.Within the text,SI units are shown in brackets.The values stated in eachsystem may not be exact equivalents;therefore,each systemshall be used independently of the other.Combining valuesfrom the two systems may result in nonconformance with thestandard.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2B250/B250M Specification for General Requirements forWrought Copper Alloy WireB601 Classification for Temper Designations for Copper andCopper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysB950 Guide for Editorial Procedures and Form of ProductSpecifications for Copper and Copper AlloysE8/E8M Test Methods for Tension Testing of Metallic Ma-terialsE62 Test Methods for Chemical Analysis of Copper andCopperAlloys(Photometric Methods)(Withdrawn 2010)3E112 Test Methods for Determining Average Grain SizeE478 Test Methods for Chemical Analysis of Copper Alloys3.General Requirements3.1 The following sections of Specification B250/B250Mconstitute a part of this specification:3.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Workmanship,Finish,and Appearance,3.1.4 Sampling3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,3.1.7 Test Methods,3.1.8 Significance of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,3.1.11 Certification,3.1.12 Test Reports(Mill),3.1.13 Packaging and Package Marking,and3.1.14 Supplemental Requirements.3.2 In addition,when a section with a title identical to oneof those referenced in 3.1 appears in this specification,it1This specification is under the jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar,Wire,Shapes and Forgings.Current edition approved April 1,2017.Published April 2017.Originallyapproved in 1946.Last previous edition approved in 2012 as B206/B206M-12.DOI:10.1520/B0206_B0206M-12R17.2For 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 contains additional requirements that supplement those whichappear in Specification B250/B250M.4.Terminology4.1 For the definition of general terms related to copper andcopper alloys,refer to Terminology B846.5.Ordering Information5.1 Include the following specified choices when placingorders for products under this specification,as applicable:5.1.1 ASTM designation and year of issue,5.1.2 Copper Alloy UNS No.(Section 1),5.1.3 Temper designation