20pcs 9mm x 3mm N35 Strong Rare Earth NdFeB Neodymium Disc Magnets

Specification: Material : NdFeB magnetic Shape:Round Size: Dia.9mm Thickness: 3mm Operating Temperature: ≤ 80 / 176 ‰ Quantity: 20pcs Feature: 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. Applications: 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: VCM, CD / DVD-ROM, generators, motors, servo motors, micro-motors, motors, vibration motors. 4) Machinery and equipment: magnetic Discounted at only: US$ 6.99