Magna magnet products
Alnico magnet
Alnico magnets have excellent mechanical strength, such as being resistant to high temperatures and not easily cracking. However, it has the disadvantage of being easily demagnetized.
It was widely used until the price of cobalt, the raw material, soared and cheaper ferrite became mainstream. The potential of magnets is high,Br valueis equivalent to a neodymium magnet, so if you can compensate for the low coercive force (by increasing the overall length, reinforcing it with a magnetic circuit, etc.), it can be said to be a powerful magnet comparable to rare earth magnets.
It is very popular in various meters and communication fields, and its applications are expanding to include power meters and crime prevention devices.
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Characteristics of alnico magnets
- Resistant to temperature changes and can be used even at high temperatures (550℃).
- An alloy consisting of three types: aluminum, nickel, and cobalt.
- It has excellent corrosion resistance and does not require coating or surface treatment.
- It has low holding power and is easily demagnetized. (Repulsion makes it easier to demagnetize)
Use
Used for adsorption of flow meters such as water meters, audio equipment such as electric guitars, magnets for educational materials (metal type), and high-temperature furnaces.
Main raw material
Iron (Fe), Aluminum (Al), Nickel (Ni), Cobalt (Co)

