ASTM A677-16 - 1.4.2016
 
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 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.

 
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

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

E18-22

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