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ASTM A840/A840M-00

Historical Revision

Standard Specification for Fully Processed Magnetic Lamination Steel (Withdrawn 2011)

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1.1 This specification covers cold-rolled carbon steel coils or strip used in the fully processed condition in magnetic lamination applications.

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 further heat treatment by the purchaser is not necessary for most uses.

1.3 Fully processed magnetic lamination steels are flat-rolled low carbon iron alloys having 1 % maximum silicon and 0.4 % maximum 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.


SDO ASTM: ASTM International
Document Number A840
Publication Date Oct. 10, 2000
Language en - English
Page Count 4
Revision Level 00
Supercedes
Committee A06.02
Publish Date Document Id Type View
Jan. 1, 2006 A0840_A0840M-00R06 Revision
Oct. 10, 2000 A0840_A0840M-00 Revision
Jan. 1, 1996 A0840_A0840M-91R96E01 Revision