ASTM A 840/A840M : 2000
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Specification for Fully Processed Magnetic Lamination Steel
English
10-10-2000
11-11-2014
CONTAINED IN VOL. 03.04, 2006 Covers cold-rolled carbon steel coils or strip used in the fully processed condition in magnetic lamination applications.
| Committee |
A 06
|
| DevelopmentNote |
Supersedes ASTM A 840M. (07/2004)
|
| DocumentType |
Standard
|
| Pages |
4
|
| ProductNote |
Reconfirmed 2000
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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.
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