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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