ASTM A876-2009e1 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的标准规格》.pdf
《ASTM A876-2009e1 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的标准规格》.pdf》由会员分享,可在线阅读,更多相关《ASTM A876-2009e1 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的标准规格》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: A876 091Standard Specification forFlat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel,Fully Processed Types1This standard is issued under the fixed designation A876; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisi
2、on, 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.1NOTECorrected conversion in Table 2 editorially in March 2012.1. Scope1.1 This specification covers the detailed
3、requirements towhich the specified grades of flat-rolled, grain-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 el
4、ectrical steels are low-carbon,silicon-iron alloys with a silicon 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 (
5、1) conventional grain-oriented electrical steel tested at15 kG (1.5 T) in accordance with Test Method A343/A343M,(2) conventional grain-oriented electrical steel tested at 17 kG(1.7 T) in accordance with Test Method A343/A343M,(3)high-permeability grain-oriented electrical steel tested at 17 kG(1.7
6、T) in accordance with Test Method A343/A343M, and (4)laser-scribed high-permeability grain-oriented electrical steeltested at 17 kG (1.7 T) in accordance with Test MethodsA804/A804M.1.4 The values stated in customary (cgs-emu and inch-pound) units are to be regarded as standard. The values givenin p
7、arentheses are mathematical conversions to SI units, whichare provided for information only and are not consideredstandard.2. Referenced Documents2.1 ASTM Standards:2A34/A34M Practice for Sampling and Procurement Testingof Magnetic MaterialsA340 Terminology of Symbols and Definitions Relating toMagn
8、etic TestingA343/A343M Test Method for Alternating-Current Mag-netic Properties of Materials at Power Frequencies UsingWattmeter-Ammeter-Voltmeter Method and 25-cm EpsteinTest FrameA345 Specification for Flat-Rolled Electrical Steels forMagnetic ApplicationsA664 Practice for Identification of Standa
9、rd Electrical SteelGrades in ASTM SpecificationsA700 Practices for Packaging, Marking, and Loading Meth-ods for Steel Products for ShipmentA717/A717M Test Method for Surface Insulation Resistiv-ity of Single-Strip SpecimensA719/A719M Test Method for Lamination Factor of Mag-netic MaterialsA721/A721M
10、 Test Method for Ductility of Oriented Elec-trical SteelA804/A804M Test Methods for Alternating-Current Mag-netic Properties of Materials at Power Frequencies UsingSheet-Type Test SpecimensA937/A937M Test Method for Determining InterlaminarResistance of Insulating Coatings Using Two AdjacentTest Sur
11、facesA976 Classification of Insulating Coatings for ElectricalSteels by Composition, Relative Insulating Ability andApplication3. Terminology3.1 The terms and symbols used in this specification aredefined in Terminology A340.4. Classification4.1 The ASTM core-loss type designations, formulated inacc
12、ordance with Practice A664, for grain-oriented electricalsteels covered by this specification are listed in Table 1.1This specification is under the jurisdiction of ASTM Committee A06 onMagnetic Properties and is the direct responsibility of Subcommittee A06.02 onMaterial Specifications.This specifi
13、cation replaces A665, A725, and A843.Current edition approved May 1, 2009. Published June 2009. Originallyapproved in 1987. Last previous edition approved in 2003 as A87603. DOI:10.1520/A0876-09.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at
14、serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Condition5.1 These grain-oriented electrical ste
15、els may be purchasedin any of the following conditions (which are combinations ofmaterial form and surface type or treatment) as desired for theexpected end use.5.1.1 Condition NFAn annealed coil form having aninorganic surface coating, Type C-2 (Note 1). This material isnot flattened and so exhibit
16、s appreciable coil curvature. Theprincipal application 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 ath
17、inner (compared to Condition F5) inorganic coating, TypeC-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 a
18、n inorganic surface coating, Type C-2, plus aninorganic 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 coiled
19、strip (sometimes called “punching quality”) with the inherentC-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.NOTE 1Additional desc
20、ription of surface coating Types C-2 and C-5is presented in Specification A345 and Classification A976.5.2 Core-loss types having code letters Pand Q are availableonly in Condition F5.6. Ordering Information6.1 Orders for material under this specification shall includesuch of the following informati
21、on as is required to describe thematerial adequately:6.1.1 ASTM specification number,6.1.2 ASTM core-loss type designation (Table 1),TABLE 1 Core-Loss Type DesignationsConventional Grain-Oriented Electrical SteelTested at 15 kG (1.5 T) in Accordance with Test Method A343/A343MASTMCore-LossTypeAAimTh
22、ickness,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 0.0118 (0.30) 0.58 (1.28) 0.44 (0.97)35G066 0.0138 (0.35) 0.66 (1.46) 0.50 (1.11)Conventional G
23、rain-Oriented Electrical SteelTested at 17 kG (1.7 T) in Accordance with Test Method A343/A343MASTMCore-LossTypeAAimThickness,Bin. (mm)Maximum Specific CoreLoss,CW/lb (W/kg)60 Hz 50 Hz23H070 0.0090 (0.23) 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
24、.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 A343/A343MASTMCore-LossTypeAAimThickness,Bin. (mm)Maximum Specific CoreLoss,CW/lb (W/kg)60 Hz 50 Hz23P060 0.0090 (0.23) 0.60 (1.32) 0.46
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