Your partner for magnetic solution & high quality magnet

English

NDFEB

Known as the third Generation of Rare Earth Magnets, Neodymium-Iron-Boron(NdFeB) magnets are the most powerful and advanced commercialized permanent magnets today. NdFeB magnets are introduced in 1980. This material offers the highest Energy Product (BH)max commercially available. Today their typical applications include high performance sensors, various DC motors, linear actuators, MRI, wind energy turbines etc. The highest (BH)max reaches up to 51MGOe. The choice of strip casting and HDDR technology in our factory allow us to make high performance NdFeB over N52 possible. The intrinsic coercive force is over 30000 Oe. Also, magnets are protected with effective surface treatment to prevent corrosion.

Why Choose Sintered NdFeB Magnet?

MAGNETIC CHARACTERISTICS AND PHYSICAL PROPERTIES OF SINTERED Nd-Fe-B

PROPERTIES
——————————
GRADE

BrmT (KGs)Hcb KA/m (Koe)Hcj KA/m (KOe)(BH)max KJ/m³ (MGOe)TW 
N331130-1170 (11.3-11.7)836 (10.5)955 (12)247-263 (31-33)80
N351170-1210 (11.7-12.1)868 (10.9)955 (12)263-287 (33-36)80
N381210-1250 (12.1-12.5)899 (11.3)955 (12)287-310 (36-39)80
N401250-1280 (12.5-12.8)923 (11.6)955 (12)302-326 (38-41)80
N421280-1320 (12.8-13.2)923 (11.6)955 (12) 318-342 (40-43)80
N451320-1380 (13.2-13.8)876 (11.0)955 (12)342-366 (43-46)80
N481380-1420 (13.8-14.2)835 (10.5)876 (11)366-390 (46-49)80
N501400-1450 (14.0-14.5)796 (10.0)876 (11) 382-406 (48-51)60
N521430-1480 (14.3-14.8)796 (10.0)876 (11) 398-422 (50-53)60
N35M1170-1220 (11.7-12.2)868 (10.9)1114 (14)263-287 (33-36)100
N38M1220-1250 (12.2-12.5)899 (11.3)1114 (14)287-310 (36-39)100
N40M1250-1280 (12.5-12.8)923 (11.6)1114 (14) 302-326 (38-41)100
N42M1280-1320 (12.8-13.2)955 (12.0)1114 (14)318-342 (40-43)100
N45M1320-1380 (13.2-13.8)995 (12.5)1114 (14)342-366 (43-46)100
N48M1360-1430 (13.6-14.3)1027 (12.9)1114 (14)366-390 (46-49)100
N50M1400-1450 (14.0-14.5)1033 (13.0)1114 (14)382-406 (48-51)100
33H1130-1170 (11.3-11.7)836 (10.5)1353 (17)247-271 (31-34)120
35H1170-1210 (11.7-12.1)868 (10.9)1353 (17)263-287 (33-36)120
38H1210-1250 (12.1-12.5)899 (11.3)1353 (17)287-310 (36-39)120
40H1240-1280 (12.4-12.8)923 (11.6)1353 (17)302-326 (38-41)120
42H1280-1320 (12.8-13.2)955 (12.0)1353 (17)318-342 (40-43)120
45H1300-1360 (13.0-13.6)963 (12.1)1353 (17)342-358 (43-46)120
48H1370-1430 (13.7-14.3)995 (12.5)1353 (17)358-390 (46-49)120
33SH1130-1170 (11.3-11.7)844 (10.6)1592 (20)247-272 (31-34)150
35SH1170-1210 (11.7-12.1)876 (11.0)1592 (20)263-287 (33-36)150
38SH1210-1250 (12.1-12.5)907 (11.4)1592 (20)287-310 (36-39)150
40SH1240-1280 (12.4-12.8)939 (11.8)1592 (20)302-326 (38-41)150
42SH1280-1320 (12.8-13.2)987 (12.4)1592 (20)318-342 (40-43)150
45SH1320-1380 (13.2-13.8)1003 (12.6)1592 (20)342-366 (43-46)150
28UH1020-1080 (10.2-10.8)764 (9.6)1990 (25)207-231 (26-29)180
30UH1080-1130 (10.8-11.3)812 (10.2)1990 (25)223-247 (28-31)180
33UH1130-1170 (11.3-11.7)852 (10.7)1990 (25)247-271 (31-34)180
35UH1180-1220 (11.8-12.2)860 (10.8)1990 (25)263-287 (33-36)180
38UH1220-1250 (12.2-12.5)876 (11.0)1990 (25)287-310 (36-39)180
40UH1240-1280 (12.4-12.8)899 (11.3)1990 (25)302-326 (38-41)180
28EH1040-1090 (10.4-10.9)780 (9.8)2388 (30)207-231 (26-29)200
30EH1080-1130 (10.8-11.3)812 (10.2)

2388 (30)

223-247 (28-31)200
33EH1130-1170 (11.3-11.7)836 (10.5)2388 (30)247-271 (31-34)200
35EH1170-1220 (11.7-12.2)876 (11.0)2388 (30)263-287 (33-36)200
38EH1220-1250 (12.2-12.5)899 (11.3)2388 (30)287-310 (36-39)

200

Coating and Corrosive Resistance of Sintered NdFeB
SurfaceCoatingColourThickness(μm)Standard ResistanceCorrosive Resistance
PCT TestSalt Spray Test
NickelNickelSilver10-2048hr or 72hr72hrEXCELLENT
Ni+Cu+Ni
ZincBlue ZincBright Blue8-2024hr24hrGOOD
Colour ZincShinny Colour
EpoxyEpoxyBlack / Grey15-2548hr96hrEXCELLENT
Ni+Cu+Epoxy
TinNi+Cu+SnSilver15-2072hr72hrSUPERIOR
ParyleneParyleneGrey15-2596hr200hrSUPERIOR
TeflonTeflonGrey10-2012hr24hrSUPERIOR
Phosphorization/Grey1-2--TEMPORARY PROETCTION
Passivation/Grey1-2--TEMPORARY PROETCTION
ItemParametersReference Value
Additional
Magnetic
Properties
Temp.Coeff.of Br (α(Br))/(%/K) -0.08  -0.12
Temp.Coeff.of Hcj (β(Hcj))/(%/K) -0.42  -0.70
Curie Temperature (Tc)/K 310  380
Recoil Permeability (μrec)[-]1.05
Mechanical
and Physical
Properties
Density (g/cm³) 7.6
Vickers Hardness (Hv) 650
Electrical Resistivity (μΩom) 1.4
Compressive Strength (Mpa) 1050
Tensile Strength (Mpa) 80
Bending Strength (Mpa) 290
Thermal Conductivity (W/(moK)) 6  8
Young's Modulus (Gpa) 160
 Coefficient of Thermal Expansive (C) (10-6/K) -1.5
 Coefficient of Thermal Expansive (C) (10-6/K) 6.5
Contact