Neodymium (NdFeB) N52Update 15 April 2015

BH-diagram (de-magnetisation curve)

ENERGY PRODUCT = Hd*Bd = 52 Mega Gauss * Oersted (MGO)Grade N52Residual Induction Br 14.3-14.8 (1430-1480) KG (mT)Coercive Force Hcb 10.0 (796) kOe(KA/m)Intrinsic Coercive Force Hcj 11.0 (876) kOe(KA/m)Energy Product BHmax 50-53 (398-422) MGO(KJ/m3)Max. Operating Temp. 60 C

N35N38N40N42N45N48N50N5235M38M40M42M48M50M35H38H40H42H45H48H35SH38SH40SH42SH45SH28UH30UH33UH35UH38UH40UH

For the description of the properties of magnets practical and theoretical comparisons need to be done. Magnetic materials preferably are conditioned and measured in electro magnetic fields. The BH-diagram is used to determine a characteristical figure - the so called ENERGY PRODUCT : BHmax = Mega Gauss * Oersted (MGsOe or MGO) This regards to the largest possible rectangle area below the Br/Hcb-curve. For e.g. Neodymium N45 it is 45 MGO. The values in table (e.g. 43...46) relate to the tolerances in production. The BH-Diagramm shows how strong an electro magnetic field (H) must be in order de-magnetize a permanent magnet with a field (B).

HKCM EngineeringLangebrueckstr. 24D-24340 Eckernfoerdep: +49 (0) 4351 878 015f: +49 (0) 4351 878 130e: magnet@hkcm.dew: https://www.hkcm.de

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