permament rare earth magnet disc SIZE D50XH20mm

Price: 0.01~1.0 USD
Trade Term: FOB
Payment Terms: T/T,L/C,WU
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Basic Info.
  • Application: Industrial Magnet 
  • Shape: Others 
  • Type: Permanent 
  • Composite: Neodymium Magnet 
  • Brand Name: rainbow magnet 
  • Shape: Disc 
  • Coating: Ni 
  • Grade: N40M 
  • Model No.: RM-D24 
  • Place of Origin: Zhejiang  
  • Min.Order: 10 Piece/Pieces
  • Means of Transport: Ocean, Air, experess
Supply Capacity
  • Production Capacity: 100TON/MONTH
  • Packing:standard air cartons or sea package according
  • Delivery Date: 7-30days
According the max working temperature, we can divide Sintered magnet to 7 grades, N grade is for 80 ℃,grade M is for 100℃,grade H is for 120℃,grade SH is for 120℃,grade UH is for 150℃ and grade EH is for 200℃,you according your demand to choose the grade which you need.
Mostly of rare earth permanent magnet always work do not at room temperature or under vacuum, in order to keep the accuracy of shape size and avoid the Corrosion and oxidation, we must make the coating on the surface.
Sometime, the customers have high demand of NdFeB anti-corrosion, antioxidant, we can design the magnet,add some elements, such as: niobium, vanadium, cobalt and other metal to replace part of the iron to catch the customer requirements of the acid and alkali resistant,antioxidant level, however, because of special material, we need MOQ for it.
salt spray test results for coating
Commonly type of coating
Coating thickness(um)
Neutral
salt spray test
dark Ni
Cu
Shine Ni
Total
Single-layer Ni
25
25
24h
normal
Double-layer Ni
12
10
25
72h
better
Dark Ni-Cu–shine Ni
6.25
8.75
10
25
120h
excellent

The main physical properties of sintered NdFeB
magnetic properties
Parameters
Density /g.cm3
VickersHardness HV
Resistivity /υΩ.cm
Compressivestrength/N.mm-2
Coefficient of ThermalExpansion (C⊥)/K-1
Coefficient of ThermalExpansion (C∥) /K-1
7.45
570
150
780
-4.8X10-6
-3.4X10-6

Material: Sintered Neodymium-Iron-Boron.
Size and shape: It will be different according to client's requirement;
Magnetic property: From N35 to N52, 35M to 50M, 35H to 48H, 33SH to 45SH, 30UH to 40UH, 30EH to 38EH;we are able to manufacture the full range of Sintered Nd-Fe-B products including the high energy magnets such as N52, 50M, 48H, 45SH, 40UH,38EH,34AH, (BH)max from 33-53MGOe, maximum working temperature up to 230 Degrees Centigrade.
Coating: Zn, Nickle, silver, gold, epoxy and so on.
Advantage: Temperature Stability: Neodymium magnets lose -0.09~-0.13%of Br/°C. Their working stability is under 80°C for low Hcj Neodymium magnets and above 200°C for high Hcj Neodymium magnets;
Neodymium disc Magnet are widely used in the package,bags,mobile,toys,etc.
we could produce the Neodymium Magnet according to your request as following:
Size: Diameter 3 up to 220mm
Thickness : according to your request
Grade:N35,N38,N40,N42,N45,N48......
Max. Working Tempeture: 250 deg. C
Coating: Zn, Ni, NiCuNi, Gold, or Epoxy,black phosphate coated
Magnetized direction: Through thichness or Diameter

permament rare earth magnet disc SIZE D50XH20mm
permament rare earth magnet disc SIZE D50XH20mm

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Ms. Annie
Tel: 86-574-87840198
Mobile: 86-18957449606
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Contact Method
Rainbow Magnet Ltd.
factory:6# Nijiatan Hi-Tech park; sales office :Room.301-303# North building No 762 Baizhang Road(E), Ningbo, Zhejiang, China (Mainland) / 315040
Fax: 86-574-87393806
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