ASTM-A726 › Historical Revision Information
Cold-Rolled Magnetic Lamination Quality Steel, Semiprocessedtypes, Standard Specification
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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 where 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 purchaser can optimize magnetic properties for the various types.
1.3 A non-guaranteed core-loss type is usually made to controlled chemical composition. However, magnetic properties are not guaranteed by the producer.
1.4 Higher quality core-loss types are made to controlled chemical composition and are usually given 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 Specification A664.
1.5 The values stated in inch-pound, cgs, and em units are to be regarded as standard.
Note 1-A complete metric companion to Specification A726 has been developed-A726M; therefore, no metric equivalents are presented in this specification.Keywords
carbon steel sheet; cold-rolled magnetic laminaton steel; lamination steel; semiprocessed; ICS Number Code 77.140.40 (Steels with special magnetic properties)
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77.140.40 (Steels with special magnetic properties)
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Document Number
ASTM-A726/A726M-99
Revision Level
1999 EDITION
Status
Superseded
Publication Date
Oct. 10, 1998
Document Type
Specification
Page Count
5 pages
Committee Number
A06.02