The sintered NdFeB magnets that have the same size on length, width, and height are called strong cube neodymium magnets, which can be understood as special neodymium block magnets.

Surface Treatment of Strong Neodymium Cube Magnets

Neodymium magnets cube have super powerful magnetism, but they are easy to corrode, so 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

Custom Rare Earth Cube Magnets

Neodymium cube magnets are non-standard rare earth cube magnet for industry,due to sintered Nd-Fe-B material has good machinability and can be customized into different sizes of neodymium(NdFeB) cube magnets, the exact mould is not demanded for customizing strong neodymium cube magnets.You can order tiny and large neodymium cube magnets for any quantity from us.

Maximum Working Temperature for Each Grade of Strong NdFeB Cube 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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