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About This Item

 

Full Description

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.

 

Document History

  1. ASTM A840-06


    Standard Specification for Fully Processed Magnetic Lamination Steel (Withdrawn 2011)

    • Most Recent
  2. ASTM A840/A840M-00(2006)


    Standard Specification for Fully Processed Magnetic Lamination Steel (Withdrawn 2011)

    • Historical Version
  3. ASTM A840/A840M-00

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    Standard Specification for Fully Processed Magnetic Lamination Steel

    • Historical Version