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ASTM A345-14

(Specification)

Standard Specification for Flat-Rolled Electrical Steels for Magnetic Applications

Standard Specification for Flat-Rolled Electrical Steels for Magnetic Applications

ABSTRACT
This specification deals with flat-rolled electrical steels for magnetic applications. These steels are composed principally of iron with relatively small amounts of alloying elements such as silicon and aluminum. The magnetic properties of the material shall be specified. Electrical steels are normally provided with an electrical resistivity appropriate to the core-loss limit and the specified end use. The surface insulation ability may differ widely with the class of electrical steel and the intended end use. Several types of applied coatings available to attain different levels of insulation ability are: C-0, C-2, C-3, C-4, C-4AS, C-5, C5-AS, and C-6. Mechanical properties such as ductility, lamination factor, tensile or yield strength, and so forth shall be specified. Magnetic, electrical, and mechanical tests shall be made.
SCOPE
1.1 This specification covers general procedures for specifying requirements in the procurement and delivery of flat-rolled electrical steels for magnetic applications. When an applicable individual specification does not exist, this specification enables the user to order a suitable material to be supplied under controlled conditions with respect to magnetic quality, sampling, testing, packaging, and so forth, by specifying certain requirements on the purchase order and citing this specification.  
1.2 Individual ASTM electrical steel specifications that are in conformity with this specification are Specifications A677, A683, A726, A840, A876, and A1086.Note 1—For more information on other standards associated with this specification, refer to the following: Test Methods A341/A341M, A343/A343M, A348/A348M, A596/A596M, A712, A717/A717M, A719/A719M, A720/A720M, A721/A721M, A773/A773M, A804/A804M, A889/A889M, A937/A937M, A971/A971M, and Practice A664.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2014
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

Relations

Replaces
ASTM A345-09 - Standard Specification for Flat-Rolled Electrical Steels for Magnetic Applications
Effective Date
01-May-2014
Referred By
ASTM A876-17e1 - Standard Specification for Flat-Rolled, Grain-Oriented, Silicon-Iron, Electrical Steel, Fully Processed Types
Effective Date
01-May-2014
Referred By
ASTM A976-18 - Standard Classification of Insulating Coatings for Electrical Steels by Composition, Relative Insulating Ability and Application
Effective Date
01-May-2014

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Standards Content (Sample)

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: A345 −14
Standard Specification for
1
Flat-Rolled Electrical Steels for Magnetic Applications
This standard is issued under the fixed designation A345; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope netic Properties of Materials at Power Frequencies Using
Wattmeter-Ammeter-Voltmeter Method and 25-cm Ep-
1.1 This specification covers general procedures for speci-
stein Test Frame
fying requirements in the procurement and delivery of flat-
A348/A348M TestMethodforAlternatingCurrentMagnetic
rolled electrical steels for magnetic applications. When an
Properties of Materials Using the Wattmeter-Ammeter-
applicable individual specification does not exist, this specifi-
Voltmeter Method, 100 to 10 000 Hz and 25-cm Epstein
cation enables the user to order a suitable material to be
Frame
supplied under controlled conditions with respect to magnetic
A596/A596M Test Method for Direct-Current Magnetic
quality, sampling, testing, packaging, and so forth, by specify-
Properties of Materials Using the Ballistic Method and
ing certain requirements on the purchase order and citing this
Ring Specimens
specification.
A664 Practice for Identification of Standard Electrical Steel
1.2 Individual ASTM electrical steel specifications that are
Grades in ASTM Specifications
in conformity with this specification are Specifications A677,
A677 Specification for Nonoriented Electrical Steel Fully
A683, A726, A840, A876, and A1086.
Processed Types
NOTE 1—For more information on other standards associated with this
A683 Specification for Nonoriented Electrical Steel, Semi-
specification, refer to the following: Test Methods A341/A341M, A343/
processed Types
A343M, A348/A348M, A596/A596M, A712, A717/A717M, A719/
A719M, A720/A720M, A721/A721M, A773/A773M, A804/A804M, A700 Practices for Packaging, Marking, and Loading Meth-
3
A889/A889M, A937/A937M, A971/A971M, and Practice A664.
ods for Steel Products for Shipment (Withdrawn 2014)
1.3 This standard does not purport to address all of the A712 Test Method for Electrical Resistivity of Soft Mag-
safety concerns, if any, associated with its use. It is the
netic Alloys
responsibility of the user of this standard to establish appro- A717/A717M TestMethodforSurfaceInsulationResistivity
priate safety and health practices and determine the applica-
of Single-Strip Specimens
bility of regulatory limitations prior to use.
A719/A719M Test Method for Lamination Factor of Mag-
netic Materials
2. Referenced Documents
A720/A720M Test Method for Ductility of Nonoriented
2
Electrical Steel
2.1 ASTM Standards:
A721/A721M Test Method for Ductility of Oriented Electri-
A34/A34M Practice for Sampling and Procurement Testing
cal Steel
of Magnetic Materials
A726 Specification for Cold-Rolled Magnetic Lamination
A340 Terminology of Symbols and Definitions Relating to
Quality Steel, Semiprocessed Types
Magnetic Testing
A773/A773M Test Method for dc Magnetic Properties of
A341/A341M Test Method for Direct Current Magnetic
Materials Using Ring and Permeameter Procedures with
Properties of Materials Using D-C Permeameters and the
dc Electronic Hysteresigraphs
Ballistic Test Methods
A804/A804M Test Methods for Alternating-Current Mag-
A343/A343M Test Method for Alternating-Current Mag-
netic Properties of Materials at Power Frequencies Using
Sheet-Type Test Specimens
1
A840 Specification for Fully Processed Magnetic Lamina-
This specification is under the jurisdiction of ASTM Committee A06 on
3
Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on
tion Steel (Withdrawn 2011)
Material Specifications.
A876 Specification for Flat-Rolled, Grain-Oriented, Silicon-
Current edition approved May 1, 2014. Published May 2014. Originally
Iron, Electrical Steel, Fully Processed Types
approved in 1949 to replace A310. Last previous edition approved in 2009 as
A345–09. DOI: 10.1520/A0345-14.
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

---------------------- Page: 1 ----------------------
A345 − 14
A889/A889M Test Method for Alternating-Current Mag- conditions of manufacture shall be negotiated between the
netic Properties of Materials at Low Magnetic Flux producer and the user.
Density Using th
...

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. 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.
Designation: A345 − 09 A345 − 14
Standard Specification for
1
Flat-Rolled Electrical Steels for Magnetic Applications
This standard is issued under the fixed designation A345; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers general procedures for specifying requirements in the procurement and delivery of flat-rolled
electrical steels for magnetic applications. When an applicable individual specification does not exist, this specification enables the
user to order a suitable material to be supplied under controlled conditions with respect to magnetic quality, sampling, testing,
packaging, and so forth, by specifying certain requirements on the purchase order and citing this specification.
1.2 Individual ASTM electrical steel specifications that are in conformity with this specification are Specifications A677, A683,
A726, A840, A876and , and A876A1086.
NOTE 1—For more information on other standards associated with this specification, refer to the following: Test Methods A341/A341M, A343/A343M,
A348/A348M, A596/A596M, A712, A717/A717M, A719/A719M, A720/A720M, A721/A721M, A773/A773M, A804/A804M, A889/A889M, A937/
A937M, A971/A971M, and Practice A664.
1.3 The following safety hazards caveat pertains only to the test methods portion, Section 13, of this specification.This standard
does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
A34/A34M Practice for Sampling and Procurement Testing of Magnetic Materials
A340 Terminology of Symbols and Definitions Relating to Magnetic Testing
A341/A341M Test Method for Direct Current Magnetic Properties of Materials Using D-C Permeameters and the Ballistic Test
Methods
A343/A343M Test Method for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-
Ammeter-Voltmeter Method and 25-cm Epstein Test Frame
A348/A348M Test Method for Alternating Current Magnetic Properties of Materials Using the Wattmeter-Ammeter-Voltmeter
Method, 100 to 10 000 Hz and 25-cm Epstein Frame
A596/A596M Test Method for Direct-Current Magnetic Properties of Materials Using the Ballistic Method and Ring Specimens
A664 Practice for Identification of Standard Electrical Steel Grades in ASTM Specifications
A677 Specification for Nonoriented Electrical Steel Fully Processed Types
A683 Specification for Nonoriented Electrical Steel, Semiprocessed Types
3
A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment (Withdrawn 2014)
A712 Test Method for Electrical Resistivity of Soft Magnetic Alloys
A717/A717M Test Method for Surface Insulation Resistivity of Single-Strip Specimens
A719/A719M Test Method for Lamination Factor of Magnetic Materials
A720/A720M Test Method for Ductility of Nonoriented Electrical Steel
A721/A721M Test Method for Ductility of Oriented Electrical Steel
A726 Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
A773/A773M Test Method for dc Magnetic Properties of Materials Using Ring and Permeameter Procedures with dc Electronic
Hysteresigraphs
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 Nov. 1, 2009May 1, 2014. Published December 2009May 2014. Originally approved in 1949 to replace A310. Last previous edition approved
in 20042009 as A345–04.–09. DOI: 10.1520/A0345-09.10.1520/A0345-14.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
A345 − 14
A804/A804M Test Methods for Alternating-Current Magnetic Properties of Materials at
...

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1.1 This specification covers general procedures for specifying requirements in the procurement and delivery of flat-rolled electrical steels for magnetic applications. When an applicable individual specification does not exist, this specification enables the user to order a suitable material to be supplied under controlled conditions with respect to magnetic quality, sampling, testing, packaging, and so forth, by specifying certain requirements on the purchase order and citing this specification.  
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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 SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to customary (cgs-emu and inch-pound) units which are provided for information only and are not considered standard.

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  • Technical specification
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ASTM
ASTM A683-16(Specification)
Standard Specification for Nonoriented Electrical Steel, Semiprocessed Types

ABSTRACT
This specification covers the standard requirements for flat-rolled, nonoriented semiprocessed 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, and are classified according to core-loss. Unlike the fully processed electrical steels covered by ASTM A 677, the electrical steels in this specification require heat treatment by the user to develop the specified magnetic properties. The steels covered by this specification have a thickness of either 0.0185 in. (0.47 mm) or 0.025 in. (0.64 mm). For each thickness there are four core loss types. The core loss shall be determined following the use of a quality evaluation anneal listed in the specification. The core loss is determined using the Epstein test method at a test frequency of 60 Hz and a maximum flux density of 15 kG (1.5 T). Test methods to determine other required physical and mechanical properties are listed. Other typical magnetic and physical properties are listed for reference.
SCOPE
1.1 This specification covers the detailed requirements to which flat-rolled, nonoriented semiprocessed 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 through heat treatment by the user.  
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.  
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to customary (cgs-emu and inch-pound) units which are provided for information only and are not considered standard.

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  • Technical specification
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ASTM
ASTM A1083/A1083M-23(Specification)
Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, Produced by Twin-Roll Casting Process

ABSTRACT
This specification covers cold-rolled, carbon, structural, and high-strength low-alloy, in coils and cut lengths produced by the twin-roll casting process. Cold-rolled steel sheet is available in the following designations: commercial steel, drawing steel, structural steel, and high-strength low-alloy steel. Sheet steel grades defined by this specification are suitable for welding if appropriate welding conditions are selected. For certain welding processes, if more restrictive composition limits are desirable, they shall be specified at the time of inquiry and confirmed at the time of ordering. The material shall be capable of being bent, at room temperature, in any direction through 180° flat on itself without cracking on the outside of the bent portion. Two tension tests shall be made from each heat or from each 50 tons [45,000 kg]. Yield strength shall be determined by either the 0.2 % offset method or the 0.5 % extension under load method unless otherwise specified.
SCOPE
1.1 This specification covers cold-rolled, carbon, structural, and high-strength low-alloy, in coils and cut lengths produced by the twin-roll casting process.  
1.2 Cold rolled steel sheet produced by the twin-roll casting process is available in the designations as listed in 4.1.  
1.3 This specification does not apply to steel strip as described in Specification A109/A109M.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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  • Technical specification
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