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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 Silver Gold plating Phosphor and Spray Epoxy Resin etc.
NdFebB Other Physical Properites:
Temp.Coeff.Of Br: -0.11%/°C
Density: 7.4g/cm 3
Vickers Hardness: 600Hv
Tensile Strength: 8.0kg/mm 2
Specific Heat: 0.12k Cak(kg°C)
Young's Modulus: 1.6x10 11 N/m 2
Poisson's Ratio: 0.24
Curie Temperature: 310-340°C
Electrical Resistivity: 144O.cm
Flexural Strength: 25kg/mm 2
Coeff.of Thermal Expansion: 4x10 -6 /°C
Thermal conductivity: 7.7cal/m.h.°C
Rigidity: 0.64N/m 2
Compressibility: 9.8x10 -12 m 2 /N
Temp.Coeff.Of iHc: -0.60%/°C
Surface Treatment Method:
Zinc Nickel Tin Phosphor Silver or Gold Plating Spray Coating Epoxy Resin
Code
Remanence Br
Coercivity Force
Intrinsic Coercivity
Maximum Energy
Curie
Maximum Operating
Force
Product Bhm
Temperature
Temperature
Br
bHc
iHc
(BH)max
TC
TW
T
KGs
KA/m
KOe
KA/m
KOe
KJ/m3
MGOe
°C
°C
Sintered
N-30
1.08-1.15
10.8-11.5
780-836
9.8-10.5
>=955
>=12
220-240
28-31
310
80-100
N-33
1.13-1.17
11.3-11.7
795-880
10.0-11.1
>=955
>=12
245-260
31-33
310
80-100
N-35
1.18-1.22
11.8-12.2
875-915
11.0-11.5
>=955
>=12
260-285
33-36
310
80-100
N-38
1.22-1.26
12.2-12.6
860-915
10.8-11.5
>=955
>=12
285-303
36-38
310
80-100
N-40
1.26-1.29
12.6-12.9
836-876
10.5-11.0
>=955
>=12
303-318
38-40
310
80-100
N-42
1.29-1.33
12.9-13.3
836-876
10.5-11.5
>=955
>=12
318-342
40-42
310
80-100
N-45
1.33-1.37
13.3-13.7
836-876
10.5-11.0
>=955
>=12
342-358
42-45
310
80-100
N-48
1.37-1.43
13.7-14.3
916-1114
11.5-14.0
>=955
>=12
358-364
46-49
310
80-100
N-27H
1.02-1.10
10.2-11.0
765-835
9.6-10.5
>=1353
>=17
195-220
25-28
340
120
N-30H
1.08-1.15
10.8-11.5
810-850
10.2-10.7
>=1353
>=17
220-245
28-31
340
120
N-33H
1.14-1.17
11.4-11.7
820-876
10.3-11.0
>=1353
>=17
247-263
31-33
340
120
N-35H
1.17-1.21
11.7-12.1
860-915
10.8-11.5
>=1353
>=17
263-279
33-35
340
120
N-38H
1.22-1.26
12.2-12.6
915-955
11.5-12.0
>=1353
>=17
287-303
36-38
340
120
N-40H
1.26-1.29
12.6-12.9
915-955
11.5-12.0
>=1353
>=17
303-318
38-40
340
120
N-27SH
1.02-1.10
10.2-11.0
765-835
9.6-10.5
>=1595
>=20
195-220
25-28
350
150
N-30SH
1.08-1.12
10.8-11.2
812-852
10.2-10.7
>=1595
>=20
216-246
27-30
350
150
N-33SH
1.14-1.17
11.4-11.7
740-876
10.3-11.0
>=1595
>=20
247-263
31-33
350
150
N-35SH
1.17-1.21
11.7-12.1
860-915
10.8-11.0
>=1595
>=20
263-279
33-35
350
150
N-25UH
0.98-1.02
9.8-10.2
732-764
9.2-9.6
>=1990
>=25
183-199
23-25
350
180
N-28UH
1.04-1.08
10.4-10.8
780-812
9.8-10.8
>=1990
>=25
183-223
23-25
350
180
N-30UH
1.08-1.12
10.8-11.2
804-844
10.1-10.6
>=1990
>=25
223-239
28-30
350
180
N-33UH
1.14-1.17
11.4-11.7
740-876
10.3-11.0
>=1990
>=25
247-263
31-33
350
180
N-25EH
0.98-1.02
9.8-10.2
732-764
9.2-9.6
>=2387
>=30
183-199
23-25
350
200
N-28EH
1.04-1.08
10.4-10.8
780-812
9.8-10.2
>=2387
>=30
207-223
26-28
350
200
N-33SH
Demagnetization Curves of sintered magnet N33SH at different temperature
N-42
Demagnetization curves of sintered magnet N42 at different temperatures
Wide Applications
With its excellent magnetic property, abundant raw material and reasonable prices, rare-earth permanent magnet can be used as an ideal magnet in mini-motor, permanent-magnet instrument,electronic industry, auto industry, petro-chemical industry,nuclear magnetic resonance,sound device, magnetic suspension system, magnetic transmission machine and magnetotherapy apparatus etc.

Contact Information
San Huan (Ningbo) Nd-Fe-B Magnetics Co.,Ltd
Add:JIa tian Bridge,Ci Cheng,Ningbo,China Code:315031
Tel:0086-574-87592514  87572185  13805898815
Fax:0086-574-87592024
Web Site:http://www.shnfb.com
E-mail:shnfb2@cnool.net

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