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Ningbo Dongsheng Strong Magnet Material Co.,Ltd.
Ningbo Dongsheng Strong Magnet Material Co.,Ltd.  

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N40 Rare Earth Ndfeb Magnet disk 

Price: 0.1~0.4 USD 
Payment Terms: L/C 
Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: D07
Production Capacity: as customer require one mon...
Delivery Date: 15~30 days
Application: Industrial Magnet
Composite: NdFeB Magnet
Grade: N35~N52
Means of Transport: Ocean
Packing: 100 pieces one small box ,t...
Shape: Disc
Type: Permanent
Brand Name: Dongsheng magnet
Coating: Ni-Cu-Ni, Zn, Black Epoxy, ...

1)The samples are free
2) All industrial shaped magnets available
3) Grade from N35~N52

Accordingto the N40 diskmagnet , themax working temperature, we can divide Sintered magnet to 7 grades, N grade is for 80 ℃,grade M is for 100℃,grade H is for 120℃,grade SH is for 120℃,grade UH is for 150℃ and grade EH is for 200℃,you according your demand to choose the grade which you need.

Mostly of rare earth permanent magnet always work do not at room temperature or under vacuum, in order to keep the accuracy of shape size and avoid the Corrosion and oxidation, we must make the coating on the surface.

Sometime, the customers have high demand of NdFeB anti-corrosion, antioxidant, we can design the magnet,add some elements, such as: niobium, vanadium, cobalt and other metal to replace part of the iron to catch the customer requirements of the acid and alkali resistant,antioxidant level, however, because of special material, we need MOQ for it.



salt spray test results for coating

Commonly type of coatingCoating thickness(um)

Neutral

salt spray test

dark NiCuShine NiTotal

Single-layer Ni

25

2524hnormal

Double-layer Ni

12
102572hbetter
Dark Ni-Cu–shine Ni6.258.751025120hexcellent



The main physical properties of sintered NdFeB

magnetic propertiesParameters

Density /g.cm3

VickersHardness HV

Resistivity /υΩ.cm

Compressivestrength/N.mm-2

Coefficient of ThermalExpansion (C⊥)/K-1

Coefficient of ThermalExpansion (C∥) /K-1

7.45

570

150

780

-4.8X10-6

-3.4X10-6



Our products



Neodymium magnet dics NdFeB disc

Neodymium magnet dics NdFeB disc  Neodymium magnet dics NdFeB disc 



The Performance curves

Neodymium magnet dics NdFeB disc




The Introduction of NdFeB Magnets' Applications:  

1, Electro-acoustic field: such as loudspeaker, headphone, earphone, stage sound device, alarm, microphone and so on. Because of good performance, our magnets can provide sound equipments better sensitiveness and susceptibility.

2, Electric products: Permanent magnetic actuator vacuum circuit breaker, magneticlatchingrelay, watt-hour meter, watermeter, sensor, reed switch and so on.

3, Motor areas: VCM, CDVD-ROM, generator, electromotor, servo motor, vibration motor, step motor, DC motor, linear motor and so on. Our magnets with stable performance and high HCJ can work under high temperature which can guarantee your products work better.

4, mechanical equipment: magnetic separator, magnetic holder, and other magnetic machines.

5, Health care: nuclear magnetic resonance spectrometer, medical apparatus and instruments,

magnetic therapy and health care products, fuel-saving magnetizer and so on. Our stable permanent magnets used in health care areas will make people healthier.

6, Other fields: bags magnets, toy magnets, craft gifts and packaging, doors and windows magnets, magnetic locks, magnetic holding devices and so on.

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skype Mr. ALEX

Tel: 86-574-83005217
Fax: 86-574-83005217
Mobile: 150 6744 2120
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Company Info

Ningbo Dongsheng Strong Magnet Material Co.,Ltd. [China (Mainland)]


Business Type:Manufacturer
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)

Alex:   skype
Alex:   qq

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