ASTM A677-07
(Specification)Standard Specification for Nonoriented Electrical Steel Fully Processed Types
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.
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.
1.4 The values stated in customary (cgs-emu and inch-pound) units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered standard.
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Designation:A677 −07
StandardSpecification for
1
Nonoriented Electrical Steel Fully Processed Types
This standard is issued under the fixed designation A677; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope ods for Steel Products for Shipment
A717/A717MTestMethodforSurfaceInsulationResistivity
1.1 This specification covers the detailed requirements to
of Single-Strip Specimens
which flat-rolled nonoriented fully processed electrical steel
A719/A719MTest Method for Lamination Factor of Mag-
shall conform.
netic Materials
1.2 This steel is produced to specified maximum core-loss
A720/A720MTest Method for Ductility of Nonoriented
values and is intended primarily for commercial power fre-
Electrical Steel
quency (50- and 60-Hz) applications in magnetic devices.
A937/A937MTest Method for Determining Interlaminar
Desirable core-loss and permeability characteristics are devel-
Resistance of Insulating Coatings Using Two Adjacent
oped during mill processing, so additional heat treatment by
Test Surfaces
the user is usually not necessary.
A971Test Method for Measuring Edge Taper and Crown of
Flat-Rolled Electrical Steel Coils
1.3 These nonoriented fully processed electrical steels are
low-carbon, silicon-iron, or silicon-aluminum-iron alloys con- A976Classification of Insulating Coatings for Electrical
Steels by Composition, Relative Insulating Ability and
taining up to about 3.5% silicon and a small amount of
aluminum. Application
E18Test Methods for Rockwell Hardness of Metallic Ma-
1.4 The values stated in customary (cgs-emu and inch-
terials
pound) units are to be regarded as standard. The values given
E92TestMethodforVickersHardnessofMetallicMaterials
in parentheses are mathematical conversions to SI units which
3
(Withdrawn 2010)
are provided for information only and are not considered
E140Hardness Conversion Tables for Metals Relationship
standard.
Among Brinell Hardness, Vickers Hardness, Rockwell
Hardness, Superficial Hardness, Knoop Hardness, and
2. Referenced Documents
Scleroscope Hardness
2
2.1 ASTM Standards:
A34/A34MPractice for Sampling and Procurement Testing
3. Terminology
of Magnetic Materials
3.1 Definitions—The terms and symbols used in this speci-
A340Terminology of Symbols and Definitions Relating to
fication are defined in Terminology A340.
Magnetic Testing
A343/A343MTest Method for Alternating-Current Mag-
4. Classification
netic Properties of Materials at Power Frequencies Using
4.1 The nonoriented electrical steel types described by this
Wattmeter-Ammeter-Voltmeter Method and 25-cm Ep-
specification are as shown in Table 1.
stein Test Frame
A664Practice for Identification of Standard Electrical Steel
5. Ordering Information
Grades in ASTM Specifications
5.1 Ordersformaterialunderthisspecificationshallinclude
A700Practices for Packaging, Marking, and Loading Meth-
as much of the following information as necessary to describe
the desired material adequately:
1
5.1.1 ASTM specification number.
This specification is under the jurisdiction of ASTM Committee A06 on
Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on
5.1.2 Core-loss type number.
Material Specifications.
5.1.3 Surface coating type.
Current edition approved Nov. 1, 2007. Published December 2007. Originally
´1 5.1.4 Thickness, width, and length (if in cut lengths instead
approved in 1973. Last previous edition approved in 2005 as A677–05 . DOI:
10.1520/A0677-07. of coils).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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A677−07
A B C
TABLE 1 Core-Loss Types and Maximum Core Losses at a Magnetic Flux Density of 15 kG (1.5 T) and 60 Hz
D
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)
36F175 1.75 (3.86) 47F190 1.90 (4.19) 64F225 2.25 (4.96)
36F185 1.85 (4.08) 47F200 2.00 (4.41) 64F23
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
e1
Designation:A677–05 Designation: A 677 – 07
Standard Specification for
1
Nonoriented Electrical Steel Fully Processed Types
This standard is issued under the fixed designation A 677; 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.
1
e NOTE—The values statement (1.4) was corrected editorially in September 2006.
1. 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.
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.
1.4The1.4 The values stated in customary (cgs-emu and inch-pound) units are to be regarded as standard. The values given in
parentheses are mathematical conversions to SI units which are provided for information only and are not considered standard.
2. Referenced Documents
2
2.1 ASTM Standards:
A 34/A 34M Practice for Sampling and Procurement Testing of Magnetic Materials
A 340 Terminology of Symbols and Definitions Relating to Magnetic Testing
A 343/A 343M Test Method forAlternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-
Ammeter-Voltmeter Method and 25-cm Epstein Test Frame
A 664 Practice for Identification of Standard Electrical Steel Grades in ASTM Specifications
A 700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment
A 717/A 717M Test Method for Surface Insulation Resistivity of Single-Strip Specimens
A 719/A 719M Test Method for Lamination Factor of Magnetic Materials
A 720/A 720M Test Method for Ductility of Nonoriented Electrical Steel
A 937/A 937M Test Method for Determining Interlaminar Resistance of Insulating Coatings UsingTwoAdjacentTest Surfaces
A 971 Test Method for Measuring Edge Taper and Crown of Flat-Rolled Electrical Steel Coils
A 976 Classification of Insulating Coatings for Electrical Steels by Composition, Relative Insulating Ability and Application
E 18TestMethodsforRockwellHardnessandRockwellSuperficialHardnessofMetallicMaterials TestMethodsforRockwell
Hardness of Metallic Materials
E 92 Test Method for Vickers Hardness of Metallic Materials
E 140 Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness,
Superficial Hardness, Knoop Hardness, and Scleroscope Hardness
3. Terminology
3.1 DefinitionsDefinitions: The—The terms and symbols used in this specification are defined in Terminology A 340.
4. Classification
4.1 The nonoriented electrical steel types described by this specification are as shown in Table 1.
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 June 15, 2005. Published July 2005. Originally approved in 1973. Last previous edition approved in 1999 as A677/A677M–99.
e1
Current edition approved Nov. 1, 2007. Published December 2007. Originally approved in 1973. Last previous edition approved in 2005 as A 677–05 .
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A677–07
A B C
TABLE 1 Core-Loss Types and Maximum Core Losses at a Magnetic Flux Density of 15 kG (1.5 T) and 60 Hz
D
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 (
...
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