ASTM A1086-20

Standard Specification for Thin-Gauge Nonoriented Electrical Steel Fully Processed Types

SCOPE
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.).  
1.1.1 Refer to Specification A677 for properties of flat-rolled nonoriented fully processed electrical steel in nominal thicknesses of 0.36 mm (0.014 in.) to 0.64 mm (0.025 in.).  
1.1.2 Refer to Specification A876 for properties of flat-rolled grain-oriented fully processed electrical steel.  
1.1.3 Thin-gauge nonoriented electrical steels with a high silicon content (typically 61/2 %) manufactured using silicon vapor-deposition or similar processes are not included in this specification.  
1.2 The steel covered in this specification is produced to specified maximum core loss values and is intended primarily for use in rotating electrical machinery and other electromagnetic devices operating at moderate to elevated frequencies (100 Hz and greater). Desirable core loss and permeability characteristics are developed during mill processing; however, lamination manufacturing processes may adversely affect these mill-produced properties. Additional stress-relief heat treatment by the user may therefore be helpful in remediating these properties in the manufactured laminations. Stress-relief annealing is discussed further in Appendix X2.  
1.3 These thin-gauge nonoriented fully processed electrical steels are low-carbon, silicon-iron, or silicon-aluminum-iron alloys typically containing 2.5 to 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.  
1.4.1 There are selected values presented in two units, both of which are in acceptable SI units. These are differentiated by the word “or,” as in “g/cm3, or, (kg/m3).”  
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.

General Information

• Status: Published
• Publication Date: 31-May-2020
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: A06 - Magnetic Properties
• Drafting Committee: A06.02 - Material Specifications

Standards Content (Sample)

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.
Designation:A1086 −20
Standard Specification for
Thin-Gauge Nonoriented Electrical Steel Fully Processed
1
Types
This standard is issued under the fixed designation A1086; 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 1.4.1 There are selected values presented in two units, both
of which are in acceptable SI units. These are differentiated by
1.1 This specification covers the detailed requirements to
3 3
the word “or,” as in “g/cm , or, (kg/m ).”
which flat-rolled thin-gauge nonoriented fully processed elec-
1.5 This standard does not purport to address all of the
trical steel shall conform. Nominal thicknesses included in this
safety concerns, if any, associated with its use. It is the
specification are 0.10 mm (0.004 in.) to 0.30 mm (0.012 in.).
responsibility of the user of this standard to establish appro-
1.1.1 Refer to Specification A677 for properties of flat-
priate safety, health, and environmental practices and deter-
rolled nonoriented fully processed electrical steel in nominal
mine the applicability of regulatory limitations prior to use.
thicknesses of 0.36 mm (0.014 in.) to 0.64 mm (0.025 in.).
1.6 This international standard was developed in accor-
1.1.2 Refer to Specification A876 for properties of flat-
dance with internationally recognized principles on standard-
rolled grain-oriented fully processed electrical steel.
ization established in the Decision on Principles for the
1.1.3 Thin-gauge nonoriented electrical steels with a high
1 Development of International Standards, Guides and Recom-
silicon content (typically 6 ⁄2 %) manufactured using silicon
mendations issued by the World Trade Organization Technical
vapor-deposition or similar processes are not included in this
Barriers to Trade (TBT) Committee.
specification.
1.2 The steel covered in this specification is produced to
2. Referenced Documents
specified maximum core loss values and is intended primarily
2
2.1 ASTM Standards:
for use in rotating electrical machinery and other electromag-
A34/A34M Practice for Sampling and Procurement Testing
netic devices operating at moderate to elevated frequencies
of Magnetic Materials
(100 Hz and greater). Desirable core loss and permeability
A340 Terminology of Symbols and Definitions Relating to
characteristics are developed during mill processing; however,
Magnetic Testing
lamination manufacturing processes may adversely affect these
A343/A343M Test Method for Alternating-Current Mag-
mill-produced properties. Additional stress-relief heat treat-
netic Properties of Materials at Power Frequencies Using
ment by the user may therefore be helpful in remediating these
Wattmeter-Ammeter-Voltmeter Method and 25-cm Ep-
properties in the manufactured laminations. Stress-relief an-
stein Test Frame
nealing is discussed further in Appendix X2.
A348/A348M TestMethodforAlternatingCurrentMagnetic
1.3 These thin-gauge nonoriented fully processed electrical
Properties of Materials Using the Wattmeter-Ammeter-
steels are low-carbon, silicon-iron, or silicon-aluminum-iron
Voltmeter Method, 100 to 10 000 Hz and 25-cm Epstein
alloys typically containing 2.5 to 3.5 % silicon and a small
Frame
amount of aluminum.
A664 Practice for Identification of Standard Electrical Steel
Grades in ASTM Specifications
1.4 The values stated in SI units are to be regarded as
A677 Specification for Nonoriented Electrical Steel Fully
standard. The values given in parentheses are mathematical
Processed Types
conversions to customary (cgs-emu and inch-pound) units
A700 Guide for Packaging, Marking, and Loading Methods
whichareprovidedforinformationonlyandarenotconsidered
for Steel Products for Shipment
standard.
A717/A717M TestMethodforSurfaceInsulationResistivity
of Single-Strip Specimens
1
This specification is under the jurisdiction of ASTM Committee A06 on
Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on
2
Material Specifications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
CurrenteditionapprovedJune1,2020.PublishedJuly2020.Originallyapproved contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
in 2013. Last previous edition approved in 2013 as A1086 – 13. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
A1086-20. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
...

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: A1086 − 13 A1086 − 20
Standard Specification for
Thin-Gauge Nonoriented Electrical Steel Fully Processed
1
Types
This standard is issued under the fixed designation A1086; 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 the detailed requirements to which flat-rolled thin-gauge nonoriented fully processed electrical
steel shall conform. Nominal thicknesses included in this specification are 0.004 in. (0.10 mm) to 0.012 in. (0.30 mm).0.10 mm
(0.004 in.) to 0.30 mm (0.012 in.).
1.1.1 Refer to Specification A677 for properties of flat-rolled nonoriented fully processed electrical steel in nominal thicknesses
of 0.014 in. (0.36 mm) to 0.025 in. (0.64 mm).0.36 mm (0.014 in.) to 0.64 mm (0.025 in.).
1.1.2 Refer to Specification A876 for properties of flat-rolled grain-oriented fully processed electrical steel.
1
1.1.3 Thin-gauge nonoriented electrical steels with a high silicon content (typically 6½ %)6 ⁄2 %) manufactured using silicon
vapor-deposition or similar processes are not included in this specification.
1.2 The steel covered in this specification is produced to specified maximum core loss values and is intended primarily for use
in rotating electrical machinery and other electromagnetic devices operating at moderate to elevated frequencies (100 Hz and
greater). Desirable core loss and permeability characteristics are developed during mill processing; however, lamination
manufacturing processes may adversely affect these mill-produced properties. Additional stress-relief heat treatment by the user
may therefore be helpful in remediating these properties in the manufactured laminations. Stress-relief annealing is discussed
further in Appendix X2.
1.3 These thin-gauge nonoriented fully processed electrical steels are low-carbon, silicon-iron, or silicon-aluminum-iron alloys
typically containing 2.5 to 3.5 % silicon and a small amount of aluminum.
1.4 The values stated in customary (cgs-emu and inch-pound) SI units are to be regarded as standard. The values given in
parentheses are mathematical conversions to SI customary (cgs-emu and inch-pound) units which are provided for information
only and are not considered standard.
1.4.1 There are selected values presented in two units, both of which are in acceptable SI units. These are differentiated by the
3 3
word “or,” as in “g/cm , or, (kg/m ).”
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 safety, health, and healthenvironmental 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.
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
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
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 Aug. 1, 2013June 1, 2020. Published August 2013July 2020. Originally approved in 2013. Last previous edition approved in 2013 as A1086 – 13.
DOI: 10.1520/A1086–13.10.1520/A1086-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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

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A1086 − 20
A348/A348M Test Method for Alternating Current Magnetic Properties of Materials Using the Wattmeter-Ammeter-Volt
...