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ASTM A726

Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types

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Organization: ASTM
Publication Date: 1 October 2018
Status: active
Page Count: 7
ICS Code (Steels with special magnetic properties): 77.140.40
scope:

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.

This steel is produced to maximum specific core-loss values and is intended primarily for commercial power frequency (50- and 60-Hz) applications in magnetic devices. Specific core-loss and permeability characteristics in conformance with this specification are developed through heat treatment by the user.

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

Higher quality core-loss types are low carbon, siliconiron, or silicon-aluminum-iron alloys containing up to about 2.5 % silicon and less than 1 % aluminum. These steels 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 magnetic lamination steel, are classified by the ASTM Code Letter D in accordance with Practice A664.

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.

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.

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.

Document History

ASTM A726
October 1, 2018
Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
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...
December 1, 2005
Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
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...
December 1, 2005
Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
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...
May 10, 2000
Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
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...
October 10, 1999
Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
1. 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...
August 10, 1998
Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
A description is not available for this item.
January 15, 1992
Standard Specification for Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessed Types
A description is not available for this item.
April 26, 1985
STANDARD SPECIFICATION FOR COLD-ROLLED CARBON STEEL, MAGNETIC LAMINATION QUALITY, TYPES 1, 2, AND 2S
A description is not available for this item.

References

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