100Pcs 20x3mm Neodymium Magnet with 3mm Hole NdFeB Super Strong Craft Countersunk Round Ring Magnets

100Pcs Neodymium Magnet 20x3mm NdFeB Super Strong Craft Countersunk Round Ring Magnets 
 

Shape: Round

Material : NdFeB magnet

Size(DX H): 20mm x 3mm
Hole Dimeter: 3mm
Quantity: 100pcs

 

- 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.

 

1.Acoustic Field:  the speaker, receiver, microphone, alarm, stage audio, car audio and so on.

2.Electronics:  permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, meter, sound meter, a reed switch, sensors.

3.Electrical Field: , CD / DVD-ROM, generators, motors, servo motors, micro-motors, motors, vibration motors.

4.Machinery and Equipment: magnetic separation,  magnetic machinery.

5.Healthcare:  medical equipment, magnetic health products and so on.

6.Other industries: magnetized Wax, pipe descaling, magnetic fixture, automatic mahjong machine, magnetic locks, doors and windows magnetic, magnetic luggage, leather magnetic toys, magnetic tools, gifts and packaging.

 

100Pcs x magnets