ASTM A1054-07

    Standard Specification for Sintered Ceramic Ferrite Permanent Magnets

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    1. Scope

    1.1 This specification covers technically important, commercially available, magnetically hard sintered ceramic ferrite permanent magnets.

    1.2 Ceramic ferrite magnets have residual magnetic induction Br from 2000 G (0.2 T) up to about 5000 G (0.5 T) and intrinsic coercive field strength Hci (HcJ) from 2000 Oe (160 kA/m) up to about 5000 Oe (400 kA/m). Their specific magnetic hysteresis behavior (demagnetization curve) can be characterized using Test Method A 977/A 977M.

    1.3 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.

    This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    Other Standards

    MMPA Standard No. 0100-00 Standard Specifications for Permanent Magnet Materials Available from The International Magnetics Association (IMA), 8 South Michigan Avenue, Suite 1000, Chicago, IL 60603.

    ASTM Standards

    A340 Terminology of Symbols and Definitions Relating to Magnetic Testing

    A977/A977M Test Method for Magnetic Properties of High-Coercivity Permanent Magnet Materials Using Hysteresigraphs

    ICS Code

    ICS Number Code 29.030 (Magnetic materials)

    UNSPSC Code

    UNSPSC Code 31381200(Sintered magnets and magnet assemblies)

    Referencing This Standard
    Link Here
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    DOI: 10.1520/A1054-07

    Citation Format

    ASTM A1054-07, Standard Specification for Sintered Ceramic Ferrite Permanent Magnets, ASTM International, West Conshohocken, PA, 2007,

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