ASTM A726-05(2010)
Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types

Standard No.

ASTM A726-05(2010)

Release Date

2005

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM A726-18

Latest

ASTM A726-18

Scope

1.1 This specification covers cold-rolled carbon sheet steel used for magnetic applications. These products, commonly called “cold-rolled magnetic lamination steel” (CRML) are usually intended for applications in which the stamped laminations or assembled core structures for electrical equipment are annealed to develop the desired core loss and permeability characteristics.

1.2 By using appropriate lamination annealing practices, the user can optimize magnetic properties for the various types.

1.3 Non-guaranteed core-loss types, usually made to controlled chemical compositions, are available but are not covered by this specification.

1.4 Higher quality core-loss types are made to controlled chemical compositions and are usually given a critical reduction on a temper-mill to yield specified magnetic properties after a suitable lamination anneal. These products, typically called semiprocessed lamination steel, are classified by the ASTM Code Letter D in accordance with Practice A664.

1.5 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.

ASTM A726-05(2010) Referenced Document

• ASTM A340 Standard Terminology of Symbols and Definitions Relating to Magnetic Testing
• ASTM A343/A343M Standard Test Method for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method and 25-cm Epstein Test Frame
• ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• ASTM A664 Standard Practice for Identification of Standard Electrical Steel Grades in ASTM Specifications
• ASTM A700 Standard Practices for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment
• ASTM E140 Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, and Scleroscope Hardness
• ASTM E18 Standard Test Methods for Rockwell Hardness of Metallic Materials

ASTM A726-05(2010) history

• 2018 ASTM A726-18 Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
• 2005 ASTM A726-05(2010) Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
• 2005 ASTM A726-05 Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
• 2000 ASTM A726-00 Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types