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Neodymium Magnetic Balls

Sintered NdFeB magnets can be customized into various shapes,the round and sphere shaped neodymium(NdFeB) magnets are known as neodymium magnetic balls. we just use the diameter size to express a ball shape magnets.Colorful rare earth neodymium magnetic balls are widely use for magnetic toys.



Surface Treatment of Strong Rare Earth Ndfeb Magnetic Balls


Strong neodymium(NdFeB) magnetic balls are not waterproof and easy to corrode, so rustproof surface treatment needed, 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


Custom Powerful Neodymium Magnetic Balls


Rare earth neodymium(NdFeB) magnetic balls are non-standard magnetic product,sintered Nd-Fe-B material has good machinability and can be customized into neodymium magnet balls with different sizes,mould is not needed for customizing rare earth neodymium ball magnets.We can make any size of  tiny and large neodymium magnetic balls for any quantity.


Maximum Working Temperature of Rare Earth Neodymium Ball Shaped 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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