ASTM-A894 Historical Revision Information
Standard Test Method for Saturation Magnetization or Induction of Nonmetallic Magnetic Materials

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This test method deals with the standard practice of measuring saturation magnetization or induction of nonmetallic magnetic materials using a vibrating sample magnetometer, which could be commercially purchased from a manufacturer or constructed with normal machine shop facilities. The test specimen shall preferably be in the form of an isotropic sphere, the size of which shall depend on the measuring apparatus. Details concerning equipment setup and calibration, the measurement procedure, and the governing equations for numerical calculations are all discussed thouroughly.



1.1 This test method covers the measurement of saturation magnetization of magnetic materials using a vibrating sample magnetometer.

1.2 Explanation of symbols and abbreviated definitions appear in the text of this test method. The official symbols and definitions are listed in Terminology A 340.

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

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.


induction; magnetometer; magnetic field strength; magnetic test; saturation induction; saturation magnetization; vibrating sample magnetometer; ICS Number Code 29.030 (Magnetic materials)

To find similar documents by ASTM Volume:

03.04 (Magnetic Properties)

To find similar documents by classification:

29.030 (Magnetic materials Steels with special magnetic properties, see 77.140.40)

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Document Number


Revision Level

2000 R05 EDITION



Modification Type


Publication Date

Nov. 1, 2005

Document Type

Test Method

Page Count

5 pages

Committee Number