Introduction of Neodymium Magnet

Know as the third Generation of Rare Earth magnets, Neodymium-Iron-Boron(NiFeB) 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 30000Oe.Also,magnets are protected with effective surface treatment to prevent corrosion.

Mile Stone

Sintered neodymium magnets were invented back in 1983. The invention made a revolutionary change to the permanent magnet industry. In 1985, Japan, China and Europe all started to commercialize the production. With further development in magnet grades and applications, the neodymium magnet market expanded into a wide range of different markets.

The total production capacity of neodymium magnets was barely 69 tons per annum back in 1985, by 2008, the figure had gone up to 66,600 tons, the global production capacity increasing by almost 100 times during this period. According to the Chinese Statistic
Bureaus estimation, China would be able to offer 1.3 – 1.5 million tons per annum.

Features

Sintered Neodymium Magnets are the strongest type of magnets available due to their unique magnetic flux. The cost of neodymium magnets has reduced with improvements in production methods resulting in enhanced performance and less waste. Sintered Neodymium Magnets are also able to transfer electric power into mechanical power with maximum productivity.

Magnetic Characteristics of Sintered NdFeB

GradeMax Energy
Product
RemanenceCoercive ForceIntrinsic
Coercive Force
Curie TempMax Working
Temp
(BH)maxBrHcbHciTcTw
KJ/m3(MGOe)mT(KGs)KA/m(KOe)KA/m(KOe)
N35263-287(33-36)1170-1220(11.7-12.2)≥868(≥10.9)≥955(≥12)310≤80
N38287-310(36-39)1220-1250(12.2-12.5)≥899(≥11.3)≥955(≥12)310≤80
N40302-326(38-41)1250-1280(12.5-12.8)≥907(≥11.4)≥955(≥12)310≤80
N42318-342(40-43)1280-1320(12.8-13.2)≥915(≥11.5)≥955(≥12)310≤80
N45342-366(43-46)1320-1380(13.2-13.8)≥923(≥11.6)≥955(≥12)310≤80
N48366-390(46-49)1380-1420(13.8-14.2)≥923(≥11.6)≥876(≥11)310≤80
N50382-406(48-51)1400-1450(14.0-14.5)≥796(≥10.0)≥876(≥11)320≤60
N52398-422(50-53)1430-1480(14.3-14.8)≥796(≥10.0)≥876(≥11)320≤60
N55414-446(52-56)1460-1520(14.6-15.2)≥716(≥9.0)≥ 876(≥11)320≤60
N35M263-287(33-36)1170-1220(11.7-12.2)≥868(≥10.9)≥1114(≥14)320≤100
N38M287-310(36-39)1220-1250(12.2-12.5)≥899(≥11.3)≥1114(≥14)320≤100
N40M302-326(38-41)1250-1280(12.5-12.8)≥923(≥11.6)≥1114(≥14)320≤100
N42M318-342(40-43)1280-1320(12.8-13.2)≥955(≥12.0)≥1114(≥14)320≤100
N45M342-366(43-46)1320-1380(13.2-13.8)≥995(≥12.5)≥1114(≥14)320≤100
N48M366-390(46-49)1360-1430(13.6-14.3)≥1027(≥12.9)≥1114(≥14)320≤100
N50M382-406(48-51)1400-1450(14.0-14.5)≥1033(≥13.0)≥1114(≥14)320≤100
N52M390-422(49-53)1420-1470(14.2-14.7)≥995(≥12.5)1035(≥13)320≤100
N35H263-287(33-36)1170-1220(11.7-12.2)≥868(≥10.9)≥1353(≥17)320-350≤120
N38H287-310(36-39)1220-1250(12.2-12.5)≥899(≥11.3)≥1353(≥17)320-350≤120
N40H302-326(38-41)1250-1280(12.5-12.8)≥923(≥11.6)≥1353(≥17)320-350≤120
N42H318-342(40-43)1280-1320(12.8-13.2)≥955(≥12.0)≥1353(≥17)320-350≤120
N45H342-358(43-46)1300-1360(13.0-13.6)≥963(≥12.1)≥1353(≥17)350≤120
N48H358-390(46-49)1370-1430(13.7-14.3)≥995(≥12.5)≥1353(≥17)350≤120
N50H374-406(47-51)1390-1440(13.9-14.4)≥1035(≥13.0)≥1592(≥20)350≤120
N35SH263-287(33-36)1170-1220(11.7-12.2)≥876(≥11.0)1274(≥16)340-360≤150
N38SH287-310(36-39)1220-1250(12.2-12.5)≥907(≥11.4)≥1592(≥20)340-360≤150
N40SH302-326(38-41)1250-1280(12.5-12.8)≥939(≥11.8)≥1592(≥20)340-360≤150
N42SH318-342(40-43)1280-1320(12.8-13.2)≥987(≥12.4)≥1592(≥20)380≤150
N45SH342-366(43-46)1320-1380(13.2-13.8)≥1003(≥12.6)≥1592(≥20)380≤150
N30UH223-247(28-31)1080-1130(10.8-11.3)≥812(≥10.2)≥1990(≥25)350-380≤180
N33UH247-271(31-34)1130-1170(11.3-11.7)≥852(≥10.7)≥1990(≥25)350-380≤180
N35UH263-287(33-36)1180-1220(11.8-12.2)≥860(≥10.8)≥1990(≥25)380≤180
N38UH287-310(36-39)1220-1250(12.2-12.5)≥876(≥11.0)≥1990(≥25)380≤180
N40UH302-326(38-41)1240-1280(12.4-12.8)≥899(≥11.3)≥1990(≥25)380≤180
N30EH223-247(28-31)1080-1130(10.8-11.3)≥812(≥10.2)≥2388(≥30)380≤200
N33EH247-271(31-34)1130-1170(11.3-11.7)≥836(≥10.5)≥2388(≥30)380≤200
N35EH263-287(33-36)1170-1220(11.7-12.2)≥876(≥11.0)≥2388(≥30)380≤200
N38EH287-310(36-39)1220-1250(12.2-12.5)≥899(≥11.3)≥2388(≥30)380≤200
N40EH302-326(38-41)1250-1290(12.5-12.9)≥971(≥12.2)≥ 2308(≥29)380≤200
N33AH239-271(30-34)1110-1170(11.1-11.7)≥836(≥10.5)≥ 2706(≥34)380≤230
N35AH263-287(33-36)1170-1220(11.7-12.2)≥883(≥11.1)≥ 2706(≥34)380≤230

Coating

CoatingTechnical
Procedure Name
ColorThickness
(μm)
SST(h)Damp
Heat Test(h)
PCT(h)Temperature
(℃)
Environment
White ZnElectrical CoatingBlue8-152448---<160Normal Temperature
Zinc/ Yellow ChromatedElectrical CoatingYellow8-154848---<160Normal Temperature
Chemical NiChemistry CoatingSilver8-159630048<200Corrosive Environment
Ni-NiElectrical CoatingSilver+White10-207230048<200Corrosive Environment
Ni-Cu-NiElectrical CoatingSilver+White12-257250048<200Corrosive Environment
Ni-Cu-Ni+SnElectrical CoatingSilver+White12-257250096<200Corrosive Environment
Black EpoxyElectrophoresisBlack15-3096120---<180Strong Corrosive Environment
Grey EpoxyElectrophoresisGrey15-3096120---<180Strong Corrosive Environment
Ni-Cu+Black EpoxyElectrical Coating
+Electrophoresis
Black25-455001000---<200Strong Corrosive Environment
PhosphorizationChemical DepositionGray1-2---------<500Temporary Protection
Vacuum AluminiumVacuum CoatingSilver+White2-1010050072<500Fluctuating Temperature
Environment

SST:Salt Spray Test PCT:Pressure Cooker Test

Magnetizing Orientation and Dimensions

OrientationMinMax
LCustomized200
WCustomized200
TCustomized60
OrientationMinMax
DCustomized250
dCustomized85
HCustomized45
OrientationMinMax
DCustomized60
dCustomized25
HCustomized50
OrientationMinMax
DCustomized250
HCustomized50
OrientationMinMax
DCustomized60
HCustomized50
OrientationMinMax
LCustomized200
WCustomized100
TCustomized50
HCustomized60

L:Length T:Thickness H:Height W:Width D:Outer Diameter d:Inner Diameter