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permanent magnet

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Address: industrial area of Dongqian lake in Ningbo,Zhejiang province

Contact name:liu chuanyang

Ningbo Jiutai Magnetic Technology Co,Ltd

permanent magnet

Country/Region china
City & Province ningbo zhejiang
Categories Glass Furniture

Product Details

NdFeB Rare Earth Magnet

Quick Detail:

1.Density – 7.4-7.6 g/ cm3

2.Manufacturing process –sintering (most common), injection molding, and compression bonding.

3.Various shapes - blocks, bars, discs, rings, arc, segments, sectors, fan shape, cylinders, etc.

4.Prone to oxidation, plating is recommended ( Ni-CU-Ni, Zn,Au,Epoxy, etc)

 

Neodymium Magnets (Neodymium Iron Boron Magnets)

also known as NdFeB or Neo magnets, are the most widely-used type of rare earth magnet. It is the strongest type of permanent magnet made from an alloy of Neodymium, Iron, and Boron with the Nd2Fe14B tetragonal crystalline structure. It has replaced other types of magnets in many applications in modern products that require strong permanent magnets, such as motors in cordless tools, hard disk drives, and magnetic fasteners.

 

Physical Properties of NdFeB Magnet
Density(g/cm3)7.3-7.5
Curie Temperature (℃)320
Max. Operating Temperature (℃)220
Relative Permeability1.05
Flexural Strength (N/nm2)250
Compressive Strength (N/nm2)1100
Tensile Strength (N/nm2)75
Hardness (Hv)550-650
Temperature Coefficient of Br (%/℃)-0.09~-0.12
Temperature Coefficient of Hcj (%/℃)-0.50~-0.65

 

Applications:

Sensors and switches

Linear actuators

Microphone assemblies

Magnetic separators

DC and servo motors

Speaker Parts

Printers

Magnetic hooks

Computer rigid disc drives

Beam controls

Intelligent toys

MRI/NMR

 

Performance of Sintered Neodymium Magnets

 

Grade
Residual Induction
Coercive Force
Intrinsic Coercive Force
Maximum Energy Product
Maximum Operating
(Br)
(Hc)
(Hci)
(Bhmax)
Temp
(G)(mT)(Oe)(kA/m)(kOe) min(kA/m) min(MGOe)(KJ/m3)(°C)
N3511700117010900868129553527980
N3812200122011300899129553830380
N4012500125011400907129554031980
N4212800128011500915129554233580
N4513200132011600923129554535980
N4813800138011600923129554838280
N5014000140010000796118765039860
N5214300143010000796118765241460
33M1130011301050083614111433263100
35M1170011701090086814111435279100
38M1220012201130089914111438303100
40M1250012501160092314111440319100
42M1280012801200095514111442335100
45M1320013201250099514111445359100
48M13600136012900102714111448382100
50M14000140013000103314111450398100
35H1170011701090086817135335279120
38H1220012201130089917135338303120
40H1250012501160092317135340319120
42H1280012801200095517135342335120
45H1320013201210096317135345359120
48H1370013701250099517135348382120
35SH1170011701100087620159235279150
38SH1220012201140090720159238303150
40SH1250012501180093920159240319150
42SH1280012801240098720159242335150
45SH13200132012600100320159245359150
28UH102001020960076425199028223180
30UH1080010801020081225199030239180
33UH1130011301070085225199033263180
35UH1180011801080086025199035279180
38UH1220012201100087625199038303180
40UH1250012501130089925199040319180
42UH12800128011300899251990

 

 

Product Tags:

strong small magnets

really strong magnets

 

 

 

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