ASTM A683-2016 Standard Specification for Nonoriented Electrical Steel Semiprocessed Types《无取向电气钢半处理类型的标准规格》.pdf
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1、Designation: A683 05 (Reapproved 2010)A683 16Standard Specification forNonoriented Electrical Steel, Semiprocessed Types1This standard is issued under the fixed designation A683; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、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 to which flat-rolled, nonoriented semiprocessed electrical
3、 steel shallconform.1.2 This steel is produced to specified maximum core-loss values and is intended primarily for commercial power frequency(50-(50 and 60-Hz) 60 Hz) applications in magnetic devices. Desirable core-loss and permeability characteristics are developedthrough heat treatment by the use
4、r.1.3 These nonoriented, semiprocessed electrical steels are low carbon, silicon-iron or silicon-aluminum-iron alloys containingup to about 2.5 % silicon and less than 1 % aluminum.1.4 The values stated in customary (cgs-emu and inch-pound) SI units are to be regarded as standard. The values given i
5、nparentheses are mathematical conversions to SI customary (cgs-emu and inch-pound) units which are provided for informationonly and are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A34/A34M Practice for Sampling and Procurement Testing of Magnetic MaterialsA340 Terminology of S
6、ymbols and Definitions Relating to Magnetic TestingA343/A343M Test Method for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method and 25-cm Epstein Test FrameA664 Practice for Identification of Standard Electrical Steel Grades in ASTM Sp
7、ecificationsA700 Guide for Packaging, Marking, and Loading Methods for Steel Products for ShipmentA719/A719M Test Method for Lamination Factor of Magnetic MaterialsA720/A720M Test Method for Ductility of Nonoriented Electrical SteelA971 Test Method for Measuring Edge Taper and Crown of Flat-Rolled E
8、lectrical Steel CoilsA976 Classification of Insulating Coatings for Electrical Steels by Composition, Relative Insulating Ability and Application3. Terminology3.1 The terms and symbols used in this specification are defined in Terminology A340.4. Classification4.1 The nonoriented electrical steel ty
9、pes described by this specification are shown in Table 1.5. Ordering Information5.1 Orders for material under this specification shall include as much of the following information as necessary to describe thedesired material adequately:5.1.1 ASTM specification number.5.1.2 Core-loss type number.5.1.
10、3 Surface coating type.1 This specification is under the jurisdiction of ASTM Committee A06 on Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on MaterialSpecifications.Current edition approved Nov. 1, 2010April 1, 2016. Published December 2010April 2016. Originally appro
11、ved in 1974. Last previous edition approved in 20052010 asA683/A683M 05.A683/A683M 05 (2010). DOI: 10.1520/A0683-05R10.10.1520/A0683-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume inf
12、ormation, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately
13、depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA
14、 19428-2959. United States15.1.4 Thickness, width, and length (if in cut lengths instead of coils).5.1.5 Total weight of ordered item.5.1.6 Limitations in coil size or lift weights.5.1.7 End UseThe user shall disclose as much pertinent information as possible about the intended application to enable
15、 theproducer to provide material characteristics most suitable for specific fabricating practices.5.1.8 Special requirements or exceptions to the provisions of this specification.6. Materials and Manufacture6.1 Typical Melting and Casting:6.1.1 These semiprocessed electrical steels may be made by ba
16、sic-oxygen, electric furnace, or other steelmaking practice(s).6.1.2 These electrical steels are characterized by low carbon, usually less than 0.030 %. The principal alloying element iscommonly silicon, but aluminum up to about 0.8 % is sometimes used instead of, or in addition to, silicon, dependi
17、ng on millprocessing practice for the desired magnetic grade. Individual producers will often have different silicon or aluminum contents fora particular grade as a result of intrinsic mill processing procedures.6.1.3 Sulfur content is typically less than 0.025 % and is usually lowest in the numbere
18、d types representing lowest core loss.Manganese is typically present in amounts between 0.10 and 0.70 %. Phosphorus, copper, nickel, chromium, molybdenum,antimony, and tin are usually present only in residual amounts except in the higher numbered core-loss types where phosphorus,tin, or antimony up
19、to 0.15 % may be present.6.1.4 The producer is not required to report chemical composition of each lot except where a clear need for such informationhas been shown. In such cases, the analyses to be reported shall be negotiated between the producer and user.6.2 Typical ProcessingThe processing seque
20、nce for semiprocessed nonoriented electrical steel comprises hot rolling, pickling,cold rolling, and annealing. An additional annealing operation may precede or follow the pickling operation.6.3 When changes in the manufacture of the material are believed to exert possible significant effects upon t
21、he users fabricatingpractices and upon the magnetic performance to be obtained in the specified end use, the producer shall notify the user beforeshipment is made so the user has an opportunity to evaluate the effects.7. Magnetic Property Requirements Properties7.1 Specific Core LossEach core-loss t
22、ype of electrical steel is identified by maximum core-loss limits as shown in Table 1.7.2 PermeabilityThe permeability at all inductions magnetic flux density values shall be as high as possible consistent withthe required core-loss limits that govern the grade. Typical relative peak permeability (p
23、) values are given in Appendix X1.TABLE 1 Core-Loss TypesA and Maximum Core LossesB at aMagnetic Flux Density of 15 kG (1.5 T) and 60 HzC of QualityEvaluation Annealed Epstein SpecimensD0.0185-in. (0.47-mm) Thickness 0.025-in. (0.64-mm) ThicknessCore-LossTypeMaximum Core Loss Core-LossTypeMaximum Co
24、re LossW/lb W/kg W/lb W/kg47S155 1.55 3.42 64S200 2.00 4.4147S165 1.65 3.64 64S210 2.10 4.6347S175 1.75 3.86 64S220 2.20 4.8547S190 1.90 4.19 64S230 2.30 5.07TABLE 1 Core-Loss TypesA and Maximum Core LossesB at aMagnetic Flux Density of 1.5 T (15 kG) and 60 HzC of QualityEvaluation Annealed Epstein
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