ASTM A1101 - 16 - Standard Specification for Sintered and Fully Dense Neodymium Iron Boron (NdFeB) Permanent Magnets

ASTM A1101 - 16

Standard Specification for Sintered and Fully Dense Neodymium Iron Boron (NdFeB) Permanent Magnets

Status : Current   Published : November 2016

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HARDCOPY



1.1 This specification covers technically important, commercially available, magnetically hard sintered and fully dense neodymium iron boron (Nd 2Fe 14B, NdFeB, or “Neo”) permanent magnets. These materials are available in a wide range of compositions with a commensurately large range of magnetic properties. The numbers in the Nd 2Fe 14B name indicate the approximate atomic ratio of the key elements.

1.2 Neodymium iron boron magnets have approximate magnetic properties of residual magnetic induction, B r, from 1.08 T (10 800 G) up to 1.5 T (15 000 G) and intrinsic coercive field strength, H cJ, of 875 kA/m (11 000 Oe) to above 2785 kA/m (35 000 Oe). Special grades and isotropic (un-aligned) magnets can have properties outside these ranges (see Appendix X4). Specific magnetic hysteresis behavior (demagnetization curve) can be characterized using Test Method A977/A977M.

1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to customary (cgs-emu and inch-pound) units which are provided for information only and are not considered standard.

1.4  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.




Standard NumberASTM A1101 - 16
TitleStandard Specification for Sintered and Fully Dense Neodymium Iron Boron (NdFeB) Permanent Magnets
StatusCurrent
Publication Date01 November 2016
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Coercive field strength, Magnetic field strength, Magnetic flux density, Magnetic properties, Maximum energy product, Neodymium iron boron magnet, Neo magnet, Permanent magnet, Residual induction, Sintered rare earth magnet
ICS77.140.50
PublisherASTM
FormatA4
DeliveryYes
Pages9
File Size107 KB
Price£40.00


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