Neodymium Countersunk Block Magnets
Quantity : 500tons Price : USD0.015-----USD100
The company's magnetic assemblies products cover a wide range of types & sizes, including neodymium cup(pot) magnets, ferrite(ceramic) cup/pot magnets,plastic&rubber coated holding magnets,fishing magnets, all kinds of hook magnets, channel magnets, different types of office magnets and so on. In addition to the regular sizes for magnet assemblies, the magnets company completes the processing and assembling of many customized magnets assemblies products every year.
The rectangular magnets with holes are give the name of rare earth neodymium(NdFeB) countersunk block(rectangular) magnets,the countersunk hole make the block magnets mountable.The neodymium countersunk block magnets can be screwed onto other surface,and used as magnetic holders.
Surface Treatment of Rare Earth Strong Neodymium Magnet Blocks with Countersunk Hole
Rare earth neodymium(NdFeB) countersunk block magnets are not rust-proof and easy to corrode, and their surface needs to be coated for durable, 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 |
The Magnetization Direction of Rare Earth Strong Rectangular Neodymium Magnet with Countersunk Hole
The magnetized direction of powerful neodymium(NdFeB) countersunk block magnets generally axially magnetized and magnetized through-hole direction, other magnetization direction is determined by the required working face. Please let us know which side is N or S-pole when you order strong neodymium countersunk block magnets.
Custom Rare Earth Strong Block Magnets with Mounting Holes
Neodymium rare earth countersunk rectangular(block) magnets are custom rare earth magnets, due to the good machinability of sintered Nd-Fe-B material, it can be customized into neodymium(NdFeB) block magnet with countersunk hole in different sizes,mould is not necessary for customizing neodymium block magnets with countersunk mounting holes.We can make all small and large neodymium countersunk block magnets for any quantity.
Maximum Working Temperature for Different Grade of Strong NdFeB Countersunk 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) |
Contact : zheng David , 0086 574 86220016
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