ASTM A719/A719M-02

    Standard Test Method for Lamination Factor of Magnetic Materials

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    1. Scope

    1.1 This test method covers measurement of the lamination factor (Note 1) of a specimen composed of strips cut from magnetic material.

    Note 1—Lamination factor is also termed space factor or stacking factor.

    1.2 This test method shall be used in conjunction with Practice A 34/A 34M.

    1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this test method, SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this test method.

    1.4 This standard does not purport to address the safety concerns 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.

    ASTM Standards

    A34/A34M Practice for Sampling and Procurement Testing of Magnetic Materials


    ICS Code

    ICS Number Code 29.030 (Magnetic materials)

    UNSPSC Code

    UNSPSC Code 31380000(Magnets and magnetic materials)


    DOI: 10.1520/A0719_A0719M-02

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