ASTM_A_801_-_14.pdf

Designation:A80114Standard Specification forWrought Iron-Cobalt High Magnetic Saturation Alloys(UNSR30005 and K92650)1This standard is issued under the fixed designation A801;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 two wrought iron-cobalt alloytypes for use in magnetic components requiring high perme-ability at and above 15 kG(1.5 T)or high magnetic saturation.The specific alloy types covered are:Alloy TypeUNSNominal Composition1R3000549%Co,49%Fe,2%V2K9265027%Co,0.50%Cr,balance Fe1.1.1 This specification also covers material supplied by aproducer in the form and physical condition suitable forfabrication into parts that will later be given final heattreatment to achieve the desired magnetic characteristics and,where required,mechanical properties.It covers materialsupplied in form of forging billets,hot-rolled products(that is,bar,plate,and strip),cold-finished bars,and cold-rolled strip.1.2 This specification does not cover parts produced bycasting or by powder metallurgical techniques.1.3 The values stated in customary(cgs-emu and inch-pound)units are to be regarded as standard.The values givenin parentheses are mathematical conversions to SI units,whichare provided for information only and are not consideredstandard.1.4 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:2A34/A34M Practice for Sampling and Procurement Testingof Magnetic MaterialsA340 Terminology of Symbols and Definitions Relating toMagnetic TestingA341/A341M Test Method for Direct Current MagneticProperties of Materials Using D-C Permeameters and theBallistic Test MethodsA596/A596M Test Method for Direct-Current MagneticProperties of Materials Using the Ballistic Method andRing SpecimensA773/A773M Test Method for dc Magnetic Properties ofMaterials Using Ring and Permeameter Procedures withdc Electronic HysteresigraphsE1019 Test Methods for Determination of Carbon,Sulfur,Nitrogen,and Oxygen in Steel,Iron,Nickel,and CobaltAlloys by Various Combustion and Fusion Techniques3.Terminology3.1 The terms and symbols used in this specification aredefined in Terminology A340.4.Ordering Information4.1 Purchase orders for material under this specificationshall include the following information:4.1.1 Reference to this specification and year of issue/revision,4.1.2 Alloy type,4.1.3 Form and conditions(see Section 6),4.1.4 Dimensions and tolerances,(tolerances other thanthose in Section 9 must be stated as mutually agreed uponbetween the producer and the user),4.1.5 Quantity(weight or number of pieces),4.1.6 Magnetic property requirements if other than shown inthis specification(see Section 7),4.1.7 Certificationofanalysisormagneticqualityevaluation,or both,if needed,4.1.8 Marking and packaging,and4.1.9 Exceptions to this specification or special require-ments.4.2 End UseWhen possible,the user should specifywhether the material will be machined,blanked into flat pieces,wound into a core,punched into laminations,or photo-etched.1This specification is under the jurisdiction of ASTM Committee A06 onMagnetic Properties and is the direct responsibility of Subcommittee A06.02 onMaterial Specifications.Current edition approved May 1,2014.Published May 2014.Originallyapproved in 1999.Last previous edition approved in 2009 as A80109.DOI:10.1520/A0801-14.2For 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 5.Chemical Composition5.1 The material shall conform to the requirements pre-scribed in Table 1.Since magnetic and possibly mechanicalproperties are of primary importance to the user,analysisvariations are permitted subject to mutual agreement betweenthe producer and user.5.2 Determination of metallic constituents shall be by amethod acceptable to both producer and user.Analysis ofcarbon,nitrogen,sulfur,and oxygen shall be done in accor-dance with Test Method E1019.6.Form and Condition6.1 These materials are capable of being produced in formsand conditions described suitable for further manufacture intospecific magnetic components.The desired form and conditionshould be discussed with the producer to ensure receiving thecorrect product.Available forms and conditions are:6.1.1 Forging BilletHot-worked and surface prepared bygrind