NdFeB-Magnet

Performance

NdFeB magnet is mainly made of Neodymium?Iron and Boron,with excellent magnetic property?abundant raw material and reasonable prices,NdFeB Magnet can be used as an ideal magnet in mini-motor?Permanent magnetic resonance?sound device magnetic suspension system,magnetic transmission machine and iatrical apparatus and etc.For NdFeB,its surface is usually treatd with some special methods.The surface treatment method include Zine?Nickel?Tin?Phosphor and Spray Epoxy Resin etc.
NdFebB Other Physical Properites:

Temp.Coeff.Of Br: -0.11%/°C
Density: 7.4g/cm3
Vickers Hardness: 600Hv
Tensile Strength: 8.0kg/mm2
Specific Heat: 0.12k Cak(kg°C)
Young's Modulus: 1.6x1011N/m2
Poisson's Ratio: 0.24

Curie Temperature: 310-340°C
Electrical Resistivity: 144?.cm
Flexural Strength: 25kg/mm2
Coeff.of Thermal Expansion: 4x10-6/°C
Thermal conductivity: 7.7cal/m.h.°C
Rigidity: 0.64N/m2
Compressibility: 9.8x10-12m2/N
Temp.Coeff.Of iHc: -0.60%/°C

Surface Treatment Method:
Zinc?Nickel?Tin?Spray Coating Epoxy Resin

Item	Remanence	Coercive Force	Intrinsic Coercive Force	Max.Energy Product	Curie Temperature	Working Temperature	Density
	Br(T)	bHc(KA/m)	iHc(KOe)	(BH)max(KJ/m3)	Tc(°C)	Tw(°C)	D
N35	1.17-1.20	876-915	>12.0	263-279	310	80	7.4-7.6
N38	1.21-1.24	900-939	>12.0	279-295	310	80	7.4-7.6
N40	1.25-1.29	947-987	>12.0	302-318	310	80	7.4-7.6
N42	1.29-1.33	987-1003	>12.0	318-334	310	80	7.4-7.6
N45	1.33-1.39	1003-1028	>12.0	335-350	310	80	7.4-7.6
N40M	1.25-1.29	947-987	>14.0	302-318	320	100	7.4-7.6
N42M	1.29-1.33	987-1003	>14.0	318-334	320	100	7.4-7.6
N30H	1.08-1.12	812-852	>17.0	223-239	320	120	7.4-7.6
N33H	1.13-1.17	844-884	>17.0	247-263	320	120	7.4-7.6
N35H	1.17-1.21	884-923	>17.0	263-279	320	120	7.4-7.6
N38H	1.21-1.25	923-947	>17.0	279-302	320	120	7.4-7.6
N40H	1.25-1.29	947-987	>17.0	302-318	320	120	7.4-7.6
N30SH	1.08-1.12	812-852	>20.0	223-239	350	150	7.4-7.6
N33SH	1.13-1.17	844-884	>20.0	247-263	350	150	7.4-7.6
N35SH	1.17-1.21	884-987	>20.0	263-279	350	150	7.4-7.6
N25UH	1.00-1.04	748-788	>23.0	183-199	360	200	7.4-7.6
N28UH	1.05-1.09	788-828	>23.0	207-223	360	200	7.4-7.6
N30UH	1.08-1.12	790-850	>23.0	215-239	360	200	7.4-7.6
N33UH	1.13-1.17	844-884	>23.0	263-279	360	200	7.4-7.6