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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 H
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.
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
Other StandardsIEC 60404-8-1, Magnetic Materials Part 8: Specifications for individual materials Section 1 - Standard specifications for magnetically hard materials Available from IEC (International Electrotechnical Commission) Central Office 3, rue de Varemb, P.O. Box 131, CH - 1211, GENEVA 20 Switzerland. International Air Transport Association (IATA) Dangerous Goods Regulations, Packing Instruction 902 Available from IATA, 800 Place Victoria, PO Box 113, Montral, Quebec, H4Z 1M1. 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.
ICS Number Code 29.030 (Magnetic materials)
UNSPSC Code 31381200(Sintered magnets and magnet assemblies)
ASTM A1054-07, Standard Specification for Sintered Ceramic Ferrite Permanent Magnets, ASTM International, West Conshohocken, PA, 2007, www.astm.orgBack to Top