ASTM A876-2003 Standard Specification for Flat-Rolled Grain-Oriented Silicon-Iron Electrical Steel Fully Processed Types《全处理型平轧的晶粒取向的硅铁电工钢用标准规范》.pdf
《ASTM A876-2003 Standard Specification for Flat-Rolled Grain-Oriented Silicon-Iron Electrical Steel Fully Processed Types《全处理型平轧的晶粒取向的硅铁电工钢用标准规范》.pdf》由会员分享,可在线阅读,更多相关《ASTM A876-2003 Standard Specification for Flat-Rolled Grain-Oriented Silicon-Iron Electrical Steel Fully Processed Types《全处理型平轧的晶粒取向的硅铁电工钢用标准规范》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: A 876 03Standard Specification forFlat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel,Fully Processed Types1This standard is issued under the fixed designation A 876; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revis
2、ion, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the detailed requirements towhich the specified grades of flat-rolled, gra
3、in-oriented, fullyprocessed electrical steels shall conform. These steels are usedprimarily in transformer cores operating at moderate to highmagnetic flux densities at commercial power frequencies (50and 60 Hz).1.2 These grain-oriented electrical steels are low-carbon,silicon-iron alloys with a sil
4、icon content of approximately3.2 % in which low core loss and high permeability in thedirection of rolling have been achieved by appropriate metal-lurgical processing.1.3 The electrical-steel grades described in this specificationinclude (1) conventional grain-oriented electrical steel tested at15 k
5、G (1.5 T) in accordance with Test Method A 343/A 343M,(2) conventional grain-oriented electrical steel tested at 17 kG(1.7 T) in accordance with Test Method A 343/A 343M, (3)high-permeability grain-oriented electrical steel tested at 17 kG(1.7 T) in accordance with Test Method A 343/A 343M, and (4)l
6、aser-scribed high-permeability grain-oriented electrical steeltested at 17 kG (1.7 T) in accordance with Test MethodsA 804/A 804M.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,
7、 whichare provided for information only and are not consideredstandard.2. Referenced Documents2.1 ASTM Standards:2A 34/A 34M Practice for Sampling and Procurement Test-ing of Magnetic MaterialsA 340 Terminology of Symbols and Definitions Relating toMagnetic TestingA 343/A 343M Test Method for Altern
8、ating-Current Mag-netic Properties of Materials at Power Frequencies UsingWattmeter-Ammeter-Voltmeter Method and 25-cm EpsteinTest FrameA 345 Specification for Flat-Rolled Electrical Steels forMagnetic ApplicationsA 664 Practice for Identification of Standard ElectricalSteel Grades in ASTM Specifica
9、tionsA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for Domestic ShipmentA 717/A 717M Test Method for Surface Insulation Resis-tivity of Single-Strip SpecimensA 719/A 719M Test Method for Lamination Factor of Mag-netic MaterialsA 721 Test Method for Ductility of Orient
10、ed Electrical SteelA 804/A 804M Test Methods for Alternating-Current Mag-netic Properties of Materials at Power Frequencies UsingSheet-Type Test SpecimensA 937/A 937M Test Method for Determining InterlaminarResistance of Insulating Coatings Using Two AdjacentTest SurfacesA 976 Classification of Insu
11、lating Coatings by Composi-tion, Relative Insulating Ability and Application3. Terminology3.1 The terms and symbols used in this specification aredefined in Terminology A 340.4. Classification4.1 The ASTM core-loss type designations, formulated inaccordance with Practice A 664, for grain-oriented el
12、ectricalsteels covered by this specification are listed in Table 1.5. Condition5.1 These grain-oriented electrical steels may be purchasedin any of the following conditions (which are combinations ofmaterial form and surface type or treatment) as desired for theexpected end use.1This specification i
13、s under the jurisdiction of ASTM Committee A06 onMagnetic Properties and is the direct responsibility of Subcommittee A06.02 onMaterial Specifications.This specification replaces A 665, A 725, and A 843.Current edition approved Oct. 1, 2003. Published November 2003. Originallyapproved in 1987. Last
14、previous edition approved in 1998 as A 876/A 876M 98.2For 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.1Copyrig
15、ht ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.1.1 Condition NFAn annealed coil form having aninorganic surface coating, Type C-2 (Note 1). This material isnot flattened and so exhibits appreciable coil curvature. Theprincipal application
16、 is in spirally wound or formed cores inwhich the strip curvature is not detrimental to fabricatingprocedures or device performance.5.1.2 Condition F2Thermally flattened sheet or coiledstrip having an inorganic surface coating, Type C-2, plus athinner (compared to Condition F5) inorganic coating, Ty
17、peC-5, applied over the inherent C-2 coating. The principalapplication is in spirally wound or formed cores in which stripcurvature would be detrimental to fabricating procedures.5.1.3 Condition F5Thermally flattened sheet or coiledstrip having an inorganic surface coating, Type C-2, plus aninorgani
18、c coating, Type C-5, applied over the inherent C-2coating to provide extra surface insulation resistance. Theprincipal application is in flat sheared laminations for cores ofpower transformers.5.1.4 Condition PQThermally flattened sheet or coiledstrip (sometimes called “punching quality”) with the i
19、nherentC-2 coating removed and an inorganic coating, Type C-5,applied for insulative purposes. The principal application is inflat stamped laminations for small stacked cores with onlymoderate surface insulation requirements.TABLE 1 Core-Loss Type DesignationsConventional Grain-Oriented Electrical S
20、teelTested at 15 kG (1.5 T) in Accordance with Test Method A 343/A 343MASTMCore-LossTypeAAimThickness,Bin. (mm)Maximum Specific CoreLoss,CW/lb (W/kg)60 Hz 50 Hz18G041 0.0070 (0.18) 0.41 (0.90) 0.31 (0.68)23G045 0.0090 (0.23) 0.45 (0.99) 0.34 (0.75)27G051 0.0106 (0.27) 0.51 (1.12) 0.39 (0.85)30G058 0
21、.0118 (0.30) 0.58 (1.28) 0.44 (0.97)35G066 0.0138 (0.35) 0.66 (1.46) 0.50 (1.11)Conventional Grain-Oriented Electrical SteelTested at 17 kG (1.7 T) in Accordance with Test Method A 343/A 343MASTMCore-LossTypeAAimThickness,Bin. (mm)Maximum Specific CoreLoss,CW/lb (W/kg)60 Hz 50 Hz23H070 0.0090 (0.23)
22、 0.70 (1.54) 0.53 (1.17)27H074 0.0106 (0.27) 0.74 (1.63) 0.56 (1.24)30H083 0.0118 (0.30) 0.83 (1.83) 0.63 (1.39)35H094 0.0138 (0.35) 0.94 (2.07) 0.71 (1.57)High-Permeability Grain-Oriented Electrical SteelTested at 17 kG (1.7 T) in Accordance with Test Method A 343/A 343MASTMCore-LossTypeAAimThickne
23、ss,Bin. (mm)Maximum Specific CoreLoss,CW/lb (W/kg)60 Hz 50 Hz23P060 0.0090 (0.23) 0.60 (1.32) 0.46 (1.01)27P066 0.0106 (0.27) 0.66 (1.46) 0.50 (1.11)Laser-Scribed High-Permeability Grain-Oriented Electrical SteelTested at 17 kG (1.7 T) in Accordance with Test Methods A 804/A 804MASTMCore-LossTypeAAi
24、mThickness,Bin. (mm)Maximum Specific CoreLoss,DW/lb (W/kg)60 Hz 50 Hz23Q054 0.0090 (0.23) 0.54 (1.19) 0.41 (0.90)27Q057 0.0106 (0.27) 0.58 (1.28) 0.44 (0.97)ASee Practice A 664.BThese shall be the overall thicknesses as measured by contacting micrometrecaliper.CBased on parallel-grain Epstein specim
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