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Neodymium Block Magnets

The square shape strong neodymium (NdFeB) magnets are given the name of rare earth neodymium(NdFeB) block magnets or rectangular magnets,one strong NdFeB block(rectangular) magnet is expressed by length(L) x width(W) x thickness(T) / height(H).The strongest rare earth magnet blocks are made of neodymium.



Surface Treatment of Rare Earth Ndfeb Magnet Blocks

The square shape strong neodymium (NdFeB) magnets are give the name of rare earth neodymium(NdFeB) block magnets or rectangular magnets,one strong NdFeB block(rectangular) magnet is expressed by length(L) x width(W) x thickness(T) / height(H).The strongest rare earth magnet blocks are made of neodymium.


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


Custom Rare Earth Neodymium Block Magnets

NdFeB block magnets are non-standard products, sintered NdFeB material has good machinability and can be customized into different sizes of neodymium(NdFeB) block magnets, mold is not needed for customizing strong neodymium rectangular magnets. We can make tiny and large neodymium block magnets for any quantity.


How to Order Square Shaped Rare Earth Neodymium Magnet?

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

2, Choose the correct surface treatment according to the application conditions.

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


We have various square/block rare earth NdFeB magnets for sale, customization is also available. Contact us to know the square magnet price.


The Maximum Working Temperature  for Different Grade of Large/tiny Neodymium Block Magnets


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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