ASTM A677-12 - 1.11.2012
 
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.

1.4 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

E384-22

Standard Test Method for Microindentation Hardness of Materials

A719/A719M-14(2019)

Standard Test Method for Lamination Factor of Magnetic Materials

A717/A717M-12(2022)

Standard Test Method for Surface Insulation Resistivity of Single-Strip Specimens

A34/A34M-06(2021)

Standard Practice for Sampling and Procurement Testing of Magnetic Materials

A340-23a

Standard Terminology of Symbols and Definitions Relating to Magnetic Testing (Includes all amendments and changes 12/19/2023).

A976-18(2026)

Standard Classification of Insulating Coatings for Electrical Steels by Composition, Relative Insulating Ability and Application

E18-25

Standard Test Methods for Rockwell Hardness of Metallic Materials

A937/A937M-12(2019)

Standard Test Method for Determining Interlaminar Resistance of Insulating Coatings Using Two Adjacent Test Surfaces

A720/A720M-02(2021)

Standard Test Method for Ductility of Nonoriented Electrical Steel

A700-14(2019)

Standard Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment

A664-15(2022)

Standard Practice for Identification of Standard Electrical Steel Grades in ASTM Specifications

A343/A343M-14(2019)

Standard Test Method for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method and 25-cm Epstein Test Frame

E140-12B(2019)e1

Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness (Includes all amendments and changes 5/7/2019).

A971/A971M-17(2022)

Standard Test Method for Measuring Edge Taper and Crown of Flat-Rolled Electrical Steel Coils