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Custom Neodymium Magnet

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Custom Neodymium Magnet

Magnet  Type: ustom magnet,Irregular Shaped magnet

Material Grade: 35~N52(all series for choice)

Working Temperature: 0~220°C

Surface Treatment: ikel,Zinc,Epoxy,Gold...

Magnetization Direction: xial,Diametral,Multi-poles etc.

  • Product Details

Custom-Made Sintered Neodymium Magnet

UNMAG understand that some projects and patented applications often require a unique size or shape.

We can manufacture Sintered NdFeB magnets to your exact specifications in just a few weeks in prototype or 

production quantities,

Advice from our team of expert technicians is available as they are always on hand to help and will always

operate confidentially.Whatever the application, a dedicated member of our technical team will 

discuss your requirements with you in full with a view to understanding your application inside and out 

before we proceed to manufacture the product to your desired specifications.


There are some things to consider before designing a custom-made NdFeB magnet:

1.Which material do you require the magnet to be made from?

We can manufacture bespoke sizes in all grades of neodymium, samarium cobalt, ferrite, alnico and flexible material.

2.What size do you require?

To be able to provide a quotation we would need to know the exact dimensions as a minimum, 

preferably supplied on a technical drawing.

3.Where will the poles be positioned?

We can produce magnets and assemblies with axial, diametric, radial or multi-pole magnetisation.

4.Will the magnet require a protective coating?

We can offer a wide range of coatings to meet almost any demand.

5.How many units do you require?

It is more cost-effective to produce magnets in larger quantities; however, it is possible to produce 

most options in small batches

6.What's lead time you need?

According to your quantity and urgent requirement of delivery time,We will adjust production scheduel to meet your

delivery time.




Parameter Name Parameter Values Unit
Curie Temperature 310380
Relative Recoil Permeability 1.021.05
Reversible Temperature Coefficient of Br (20~100) -0.09-0.13 %/
Reversible Temperature Coefficient of Hcj (20~100) -0.4-0.7 %/
Density 7.507.70 g/cm3
Vickers Hardness 550700
Bending Strength -0.09-0.13 MPa
Tensile Strength ≥80 MPa
Compressive Strength 800 ~1050 MPa
Electric Resistivity 150 μΩ·cm
Thermal Conductivity 810 W/(M·)
Coefficient of Thermal Expansion 
Parallel to the orientation
5 10-6/K
Coefficient of Thermal Expansion 
vertical to the orientation
-1.5 10-6/K
Young's Modulus 150200 GPa
Specific Heat20℃~320℃) 3.04.6 J/(g·k)
weight losslow weight loss products ≤2 mg/cm2

Mixing  1.Mix the ingredients. 
Melting  2.Dissolve the mixture at high temperature and prepare an alloy. 
Fine pulverization  3.Turn the alloy into fine powder. 
Molding in a magnetic field  4.When pressing the fine powder, apply a magnetic field to it and prepare 
a molded product of powder with aligned directions of magnetization.
Sintering and heat treatment  5.Sinter the product at about 1,100℃, and then subject it to heat treatment at 
about 600℃ to increase its magnetic characteristics. 
Processing 

6.Process the manufactured magnet base material and finish it into the product

 shape. 

Surface treatment 7.Subject the product to surface treatment in order to make it rustproof. 
Magnetization  8.Apply a magnetic field to give the magnet magnetism. 


To produce according to your exact specifications,your special application.



Regarding of magnetic properties of Sintered NdFeB Magnet, Please click here.


For your different application,different grade/series for your choice.For application in normal life,N series is enough.

Different Series correspond to different working temperature.


Grade

Max Operating

 Temperatures

Series Grade Range
N 
Series
N35-N52 80°C 
M 
Series
35M-52M 100°C
H 
Series
33H-48H 120°C
SH
Series
30SH-48SH 150°C
UH
Series
30UH-42UH 180°C
EH
Series
30EH-38EH 200°C
AH
Series
30AH-35AH 220°C


Physical Properties & Application to Environment of the Coating 

Coating Material

Colour

Properties

Environment of Application

Thickness of
 Coating layer

Zinc

Blue, Black and rainbow etc

Compact, Stable and Homogeneous

With reasonalbe capability of anticorrosion

6um≤≤12

Nickel-Copper-Nickel

White and black

Light and Stable

Suitable for higher corrosive environment

15μm≤≤30pm

Phosphorization

Colorless or light gray

uniform thickness

short-term anticorrosion

-

Epoxy

Black and Gray

layer with certain luster, insurability

Suitable for higher corrosive environment

≥15μm

Parylene

transparency

uniform thickness, density pinholes-free and insurability

Excellent capability of anticorrosion especially for small items

0.1μm≤≤100pm

Ni+Cu+Epoxy

Black

Layer with certain luster

Excellent capability of

10-30μm

anticorrosion. Suitable for

hostile environment

salt spray resistance>300hr

Al+Epoxy

Black

Layer with certain luster

Excellent capability of

15-35μm

anticorrosion. Suitable for

hostile environment

salt spray resistance>650hr Widely used in new energy

auto magnets


For more details,welcome to contact with our sales engineers.                                             
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