86-571-82750965             wang@dbmagnet.com
You are here: Home » Products » Neodymium magnet » Block magnets » N40 F50.8x25.4x12.7mm Strong Neodymium Magnet Block

Product Category

Latest News


Share to:
sharethis sharing button

N40 F50.8x25.4x12.7mm Strong Neodymium Magnet Block

Strong Magnets Block Specification:
Magnetisation Grade: N40
Material: Sintered Neodymium-Iron-Boron (Rare Earth NdFeB)
Plating / Coating: Nickel (Ni-Cu-Ni)
Tolerance in size: +/-0.1mm (+/-0.05mm available)
Tmax: 80C / 176F
MOQ 500 pcs
Leading Time: 15-25working days
Sample Yes
Certificate:ISO2000, TS16949, RoHS, CE & SGS
Payment: T/T, PayPal, Western Union
  • DunBen

Strong Neodymium magnets Block
Neodymium (chemical symbol Nd) is element 60 on the periodic table. It is a rare earth metal and forms one of the Lanthanides series. When added to Iron (Fe) and Boron (B) (chemical formula Nd14Fe21B) the resultant magnets are the strongest magnets currently available. Neodymium magnets are sometimes known as Neo, Neod or NIB magnets.
Neodymium magnets are usually coated Nickel-Copper-Nickel plating to prevent the iron from rusting.
Neodymium block magnet  was made of  NdFeB, have strong magnetic performances and appearance does not rust, usually placed in  room temperature, the maximum  operating temperature is 80 ° C , and it never will demagnetization.

Please be care when  break apart  because Neodymium block magnet have strong Magnetism.

A) High energy
B) Very high Hc and Hci output
C) More economical than SmCo
D) Wonderful performance at ambient temperature

A) Working temperature is below 200oC
B) Prone to oxidation than other magnet alloys


Widely used in apparatus and instruments where a strong magnetic field is needed, including motors, sensors, microphones, electro-acoustics, magnetic separation, magnetic suckers and magnetic therapy.

ndfeb characteristics.pdf

Description & Specification:

Sintered NdFeB magnet

Strong permanent magnet with magnetic properties


N33, N35, N38, N40, N42, N45, N48, N50, N52, (M, H, SH, EH, UH )


Nickel, Ni-Cu-Ni, Zinc, white-blue Zn, Black epoxy resin, Gold




Disc, cylinder, sphere, block, ring, tile, arc, and other irregular shapes


+/-0.05mm unless specified.

Magnetized direction

Through thickness, diameter, axial, etc

Maximum working temperature

80 to 120 degrees C

Delivery time

Within 7-30 days when order confirmed

Package Condition

Standard air/sea protective package, unless specified.


N35-N52 Max.   Working Temperature 80 °C

33M-48M Max.  Working Temperature 100 °C

33H-48H Max.     Working Temperature 120 °C

30SH-45SH Max.  Working Temperature 150 °C

30UH-40UH Max.  Working Temperature 180 °C

28EH-38EH Max.  Working Temperature 200 °C

ndfeb coating.jpg ndfeb flow Magnetization


  Hang Zhou XiaoShan Dunben Magnet  Co., Ltd 
 1702, Unit 2, Building 1, Dacheng Mingzuo, Shiixn Road, Xiaoshan, Hangzhou, Zhejiang, China
  86-571-82750965 
  86-571-82751287



Scan QR Code

Copyright © Hang Zhou XiaoShan Dunben Magnet  Co., Ltd All rights reserved.
Designed by Leadong    Manage Entrance