ASTM A840/A840M-00(2006)

    Standard Specification for Fully Processed Magnetic Lamination Steel (Withdrawn 2011)

    Withdrawn Standard: ASTM A840/A840M-00(2006) | Developed by Subcommittee: A06.02

    WITHDRAWN, NO REPLACEMENT


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    Withdrawn Rationale:

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

    Formerly under the jurisdiction of Committee A06 on Magnetic Properties, this specification was withdrawn in May 2011. This standard is being withdrawn with no replacement because of a lack of commercial/technical interest.

    1. Scope

    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.



    DOI: 10.1520/A0840_A0840M-00R06

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