ASTM_A_1086_-_13.pdf

Designation:A108613Standard Specification forThin-Gauge Nonoriented Electrical Steel Fully ProcessedTypes1This standard is issued under the fixed designation A1086;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 the detailed requirements towhich flat-rolled thin-gauge nonoriented fully processed elec-trical steel shall conform.Nominal thicknesses included in thisspecification are 0.004 in.(0.10 mm)to 0.012 in.(0.30 mm).1.1.1 Refer to Specification A677 for properties of flat-rolled nonoriented fully processed electrical steel in nominalthicknesses of 0.014 in.(0.36 mm)to 0.025 in.(0.64 mm).1.1.2 Refer to Specification A876 for properties of flat-rolled grain-oriented fully processed electrical steel.1.1.3 Thin-gauge nonoriented electrical steels with a highsilicon content(typically 6%)manufactured using siliconvapor-deposition or similar processes are not included in thisspecification.1.2 The steel covered in this specification is produced tospecified maximum core loss values and is intended primarilyfor use in rotating electrical machinery and other electromag-netic devices operating at moderate to elevated frequencies(100 Hz and greater).Desirable core loss and permeabilitycharacteristics are developed during mill processing;however,lamination manufacturing processes may adversely affect thesemill-produced properties.Additional stress-relief heat treat-ment by the user may therefore be helpful in remediating theseproperties in the manufactured laminations.Stress-relief an-nealing is discussed further in Appendix X2.1.3 These thin-gauge nonoriented fully processed electricalsteels are low-carbon,silicon-iron,or silicon-aluminum-ironalloys typically containing 2.5 to 3.5%silicon and a smallamount of aluminum.1.4 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.1.5 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 TestingA343/A343M Test Method for Alternating-Current Mag-netic Properties of Materials at Power Frequencies UsingWattmeter-Ammeter-Voltmeter Method and 25-cm Ep-stein Test FrameA348/A348M Test Method forAlternating Current MagneticProperties of Materials Using the Wattmeter-Ammeter-Voltmeter Method,100 to 10 000 Hz and 25-cm EpsteinFrameA664 Practice for Identification of Standard Electrical SteelGrades in ASTM SpecificationsA677 Specification for Nonoriented Electrical Steel FullyProcessed TypesA700 Practices for Packaging,Marking,and Loading Meth-ods for Steel Products for ShipmentA717/A717M Test Method for Surface Insulation Resistivityof Single-Strip SpecimensA719/A719M Test Method for Lamination Factor of Mag-netic MaterialsA876 Specification for Flat-Rolled,Grain-Oriented,Silicon-Iron,Electrical Steel,Fully Processed TypesA927/A927M Test Method for Alternating-Current Mag-netic Properties of Toroidal Core Specimens Using theVoltmeter-Ammeter-Wattmeter MethodA937/A937M Test Method for Determining InterlaminarResistance of Insulating Coatings Using Two AdjacentTest SurfacesA971/A971M Test Method for Measuring Edge Taper andCrown of Flat-Rolled Electrical Steel Coils1This 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 Aug.1,2013.Published August 2013.DOI:10.1520/A108613.2For 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 A976 Classification of Insulating Coatings for ElectricalSteels by Composition,Relative Insulating Ability andApplicationE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE384 Test Method for Knoop and Vickers Hardness ofMaterials3.Terminology3.1 DefinitionsSee Terminology A340.4.Classification4.1 The thin-gauge nonoriented electrical steel types de-scribed by this specification are as shown in Table 1.5.Ordering Information5.1 Orders for material under this specification shall inc