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Neodymium Rectangular Magnets

The rare earth neodymium (NdFeB) rectangular magnets are important industry magnets , rare earth rectangular magnets are expressed by length(L) x width(W) x thickness(T) / height(H).



Surface Treatment of Powerful Ndfeb Rare Earth Rectangular Magnets


Strong neodymium(NdFeB) rectangular magnets are not rust-proof, and their surface needs to be coated, generally including zinc plating, nickel, environmental protection zinc, environmental protection nickel, nickel copper-nickel, environmental protection nickel copper-nickel, epoxy coating, etc.


Surface

Coating

Thickness (Microns)

Color

Resistance

Passivation


1

Silver Grey

Temporary Protection

Nickel

Ni+Ni

10-20

Bright Silver

Excellent Against Humidity

Ni+Cu+Ni

Good Against Salt Spray

Zinc

Zn

8-20

Bright Blue

Excellent Against Salt Spray

C-Zn

Shinny Color

Superior Against Humidity

Tin

Ni+Cu+Sn

15-20

Silver

Superior Against Humidity

Silver

Ni+Cu+Ag

10-20

Silver

Superior Against Humidity

Gold

Ni+Cu+Au

10-20

Gold

Temporary Protection

Copper

Ni+Cu

10-20

Gold

Excellent Against Humidity&Salt Spray

Epoxy

Epoxy

15-25

Black,Red,Grey

Excellent Against Humidity,Salt Spray,Superior Against Solvents,Gases, Fungi and Bacteria,FDA Approved

Ni+Cu+Epoxy

Excellent Against Humidity

Zn+Epoxy


Parylene

Parylene

5-20

Grey

Excellent Against Humidity

Chemical

Ni

10-20

Silver Grey

Excellent Against Humidity



Magnetization Direction of Strong Rectangular Neodymium Magnets


The magnetized direction of powerful neodymium(NdFeB) rare earth rectangular magnets generally divided into axially magnetized and diametrically magnetized, which is determined according to the required working face.


Custom Strong Neodymium Rare Earth Rectangular Bar Magnet


Rectangular NdFeB magnets are non-standard products,sintered NdFeB material has good machinability and can be customized into rectangular neodymium(NdFeB) magnets with various sizes,mould is not needed for customizing normal neodymium rectangular magnets.We can make small and large neodymium rectangular magnets for any quantity.


How to Order Neodymium(NdFeB) Magnetic Rectangles?


1, Choose correct neodymium magnet grade for the rectangular magnets according to working temperature and the needed magnetic performance.

2, Choose correct surface treatment according the application conditions.

3, Clear for the magnetization directions for the rectangular neodymium magnets.


The Maximum Working Temperature of Rare Earth Neodymium Rectangular Magnets for Different Grade


Neodymium Material Grade

Maximum Working Temp.

Curie Temp.

N(N35,N38,N40,N42,N45,N48,N50,N52)

176°F (80°C)

590°F (310°C)

N-M(N35M,N38M,N40M,N42M,N45M,N48M,N50M,N52M)

212°F (100°C)

644°F (340°C)

N-H(N35H,N38H,N40H,N42H,N45H,N48H,N50H)

248°F (120°C)

644°F (340°C)

N-SH(N35SH,N38SH,N40H,N42SH,N45SH,N48SH)

302°F (150°C)

644°F (340°C)

N-UH(N28UH,N30UH,N33UH,N35UH,N38UH,N40UH,N42UH)

356°F (180°C)

662°F (350°C)

N-EH(N28EH,N30EH,N33EH,N35EH,N38EH,N40EH)

392°F (200°C)

662°F (350°C)

N-AH(N28AH,N33AH,N35AH,N38AH)

428°F (230°C)

662°F (350°C)





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