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ASTM A677/A677M-99

(Specification)

Standard Specification for Nonoriented Electrical Steel Fully Processed Types

Standard Specification for Nonoriented Electrical Steel Fully Processed Types

SCOPE
1.1 This specification covers the detailed requirements to which flat-rolled nonoriented fully processed electrical steel shall conform.
1.2 This steel is produced to specified maximum core-loss values and is intended primarily for commercial power frequency (50 and 60 Hz) applications in magnetic devices. Desirable core loss and permeability characteristics are developed during mill processing, so additional heat treatment by the purchaser is usually not necessary.  
1.3 These nonoriented fully processed electrical steels are low-carbon, silicon-iron or silicon-aluminum-iron alloys containing up to about 3.5% silicon and a small amount of aluminum. Note 1-A complete metric companion to Specification A677 has been developed, A677M; therefore no metric units are shown in this specification.

General Information

Status
Historical
Publication Date
09-Dec-1999
ICS
77.140.50 - Flat steel products and semi-products
Technical Committee
A06 - Magnetic Properties
Drafting Committee
A06.02 - Material Specifications
Current Stage
Ref Project

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ASTM A677/A677M-99 - Standard Specification for Nonoriented Electrical Steel Fully Processed TypesASTM A677/A677M-99 - Standard Specification for Nonoriented Electrical Steel Fully Processed Types
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ASTM A677/A677M-99 - Standard Specification for Nonoriented Electrical Steel Fully Processed Types
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation: A 677/A 677M – 99
Standard Specification for
1
Nonoriented Electrical Steel Fully Processed Types
This standard is issued under the fixed designationA 677/A 677M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
3
1. Scope Methods for Steel Products for Domestic Shipment
A 717/A 717M Test Method for Surface Insulation Resis-
1.1 This specification covers the detailed requirements to
2
tivity of Single-Strip Specimens
which flat-rolled nonoriented fully processed electrical steel
A 719 Test Method for Lamination Factor of Magnetic
shall conform.
2
Materials
1.2 This steel is produced to specified maximum core-loss
A 720 Test Method for Ductility of Nonoriented Electrical
values and is intended primarily for commercial power fre-
2
Steel
quency (50- and 60-Hz) applications in magnetic devices.
A 937 Test Method for Determining Interlaminar Resis-
Desirable core-loss and permeability characteristics are devel-
tance of Insulating Coatings Using Two Adjacent Test
oped during mill processing, so additional heat treatment by
2
Surfaces
the purchaser is usually not necessary.
A 976 Classification of Insulating Coatings by Composi-
1.3 These nonoriented fully processed electrical steels are
2
tion, Relative Insulating Ability and Application
low-carbon, silicon-iron, or silicon-aluminum-iron alloys con-
E18 Test Methods for Rockwell Hardness and Rockwell
taining up to about 3.5 % silicon and a small amount of
4
Superficial Hardness of Metallic Materials
aluminum.
1.4 The values stated in either customary (cgs-emu and
3. Terminology
inch-pound) units or SI units are to be regarded separately as
3.1 Definitions: The terms and symbols used in this speci-
standard. The SI units are shown in brackets. The values stated
fication are defined in Terminology A 340.
in each system are not exact equivalents; therefore, each
system shall be used independently of the other. Combining
4. Classification
values from the two systems may result in nonconformance to
4.1 The nonoriented electrical steel types described by this
this specification.
specification are as shown in Table 1.
2. Referenced Documents
5. Ordering Information
2.1 ASTM Standards:
5.1 Orders for material under this specification shall include
A 34/A 34M Practice for Sampling and Procurement Test-
as much of the following information as necessary to describe
2
ing of Magnetic Materials
the desired material adequately:
A 340 Terminology of Symbols and Definitions Relating to
5.1.1 ASTM specification number.
2
Magnetic Testing
5.1.2 Core-loss type number.
A 343 Test Method forAlternating-Current Magnetic Prop-
5.1.3 Surface coating type.
erties of Materials at Power Frequencies Using Wattmeter-
5.1.4 Thickness, width, and length (if in cut lengths instead
Ammeter-Voltmeter Method and 25-cm Epstein Test
of coils).
2
Frame
5.1.5 Total weight of ordered item.
A 664 Practice for Identification of Standard Electrical
2 5.1.6 Limitations in coil size or lift weights.
Steel Grades in ASTM Specifications
5.1.7 End Use—The purchaser shall disclose as much
A 700 Practices for Packaging, Marking, and Loading
pertinent information as possible about the intended applica-
tion to enable the producer to provide material characteristics
most suitable for specific fabricating practices.
1
This specification is under the jurisdiction of ASTM Committee A06 on
Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on
Material Specifications.
Current edition approved Dec. 10, 1999. Published April 2000. Originally
3
published as A 677 – 73. Last previous edition A 677 – 98a. Annual Book of ASTM Standards, Vol 01.05.
2 4
Annual Book of ASTM Standards, Vol 03.04. Annual Book of ASTM Standards, Vol 03.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
A 677/A 677M – 99
A B C D
TABLE 1 Core-Loss Types and Maximum Core Losses at 15 kG [1.5 T] and 60 Hz for As-Sheared Epstein Specimens
0.0140-in. [0.36-mm] Thickness 0.0185-in. [0.47-mm] Thickness 0.0250-in. [0.64-mm] Thickness
Maximum Core Loss, Maximum Core Loss, Maximum Core Loss,
Core-Loss Type Core-Loss Type Core-Loss Type
W/lb [W/kg] W/lb [W/kg] W/lb [W/kg]
36F145 1.45 [3.20] . . . . . . . . . . . . . . . . . .
36F155 1.55 [3.42] 47F165 1.65 [3.64] 64F200 2.00 [4.41]
36F165 1.65 [3.64] 47F180 1.80 [3.97] 64F210 2.10 [4.63]
36F
...

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4.1 This is a specialized bend test for nonoriented electrical steel not covered under the provisions of Test Methods E290.  
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1.1 This specification covers the detailed requirements to which flat-rolled thin-gauge nonoriented fully processed electrical steel shall conform. Nominal thicknesses included in this specification are 0.10 mm (0.004 in.) to 0.30 mm (0.012 in.).  
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2.3 % Si-Fe free machining  
3  
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SCOPE
1.1 This specification covers the detailed requirements to which flat-rolled, nonoriented semiprocessed electrical steel shall conform.  
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1.3 These nonoriented, semiprocessed electrical steels are low carbon, silicon-iron or silicon-aluminum-iron alloys containing up to about 2.5 % silicon and less than 1 % aluminum.  
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ASTM A677-16(Specification)
Standard Specification for Nonoriented Electrical Steel Fully Processed Types

ABSTRACT
This specification covers the standard requirements for flat-rolled nonoriented fully processed electrical steel intended primarily for commercial power frequency applications in magnetic devices. These electrical steels are low-carbon, silicon iron, or silicon-aluminum-iron alloys that may be made by basic-oxygen, electric-furnace, or other steelmaking practice. Desirable core-loss and permeability characteristics are developed during mill processing, so additional heat treatment is usually not required. The grades contained in this specification have thicknesses of 0.014 in. (0. 36 mm), 0.0185 in. (0.47 mm) and 0.0250 in. (0.64 mm). For a given thickness there are from 7 to 9 types based on the maximum value of core loss measured at 60 Hz and 15 kG (1.5 T) using the Epstein test method. Test methods to determine the required magnetic and mechanical properties are specified. Other typical magnetic and physical properties are listed for reference.
SCOPE
1.1 This specification covers the detailed requirements to which flat-rolled nonoriented fully processed electrical steel shall conform.  
1.2 This steel is produced to specified maximum core-loss values and is intended primarily for commercial power frequency (50 and 60 Hz) applications in magnetic devices. Desirable core-loss and permeability characteristics are developed during mill processing, so additional heat treatment by the user is usually not necessary.  
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1.1 This specification2 covers hot-rolled carbon steel sheet for pressure vessels involving fusion welding or brazing. Welding and brazing technique is of fundamental importance and shall be in accordance with commercial practices.  
1.2 The following grades are included in this specification:    
Mechanical Requirements  
Yield Strength, min  
Tensile Strength, min  
Grade  
ksi  
MPa  
ksi  
MPa  
A  
25  
170  
45  
310  
B  
30  
205  
50  
345  
C  
33  
230  
55  
380  
D  
35  
240  
60  
415  
E  
38  
260  
65  
450  
F  
42  
290  
70  
485  
G  
45  
310  
75  
515  
H  
45  
310  
75  
515  
1.3 Hot-rolled carbon steel sheet is generally furnished in cut lengths and to decimal thickness only. Coils may be furnished, provided tension test specimens are taken to represent the middle of the slab as required by 6.1.3. The purchaser should recognize this may require cutting the coils to obtain test samples and results in half-size coils. The sheet is furnished to the following size limits:    
Width, in. [mm]    
Thickness, in. [mm]  
Over 12 [Over 300]    
0.270 to 0.230 [7.0 to 6.0]  
sheet (coils only)  
Under 0.230 to 0.057 [6.0 to 1.5]  
sheet  
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1.5 Tolerances are found in General Requirements Specifications A568/A568M and A635/A635M. The appropriate General Requirements specification is applied based on the thickness and width of the product ordered.  
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