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Alnico 5 vs Alnico 8 [Strength Component Application]

Alnico alloy magnets are divided into Alnico 1,2,3,4,5,6,7,8,9 according to the different composition content. Today, this paper mainly introduces the difference between Alnico 5 and 8 categories, including magnetic strength, composition ratio, application and so on.

Composition and structure comparison of AlNICo 5 and 8;

Alnico 5 is an alloy composed of elements such as aluminum (Al), nickel (Ni), cobalt (Co), steel (Fe), and aluminum-silicon (AlSi). It usually comes in two structural forms: cast Alnico 5 (cast) and sintered Alnico 5 (sintered).

Alnico 8 is also an alloy composed of elements such as aluminum, nickel, cobalt and aluminum-silicon. It usually comes in the form of sintering.

Material chemical composition differences between Alnico 5 and 8:

Aluminum nickel cobalt ring and hollow cylindrical magnets

Alnico 5 vs Alnico 8 Magnetic property;

Alnico 5 has good magnetic properties, which provide high permeability and high residual magnetic induction.

Compared with Alnico 5, Alnico 8 has higher permeability and higher residual magnetic induction, so it is superior in magnetic properties.

Application difference between Alnico 5 and Alnico 8;

Alnico 5 is commonly used to manufacture a variety of magnets, including motors, generators, sensors, speakers, electromagnetic relays, and more.

Alnico 8 is commonly used in applications that require higher magnetic properties, such as high-performance motors, sensors, and audio devices.

Aluminum nickel cobalt ring and hollow cylindrical magnets


Thermal stability performance of both;

Alnico 5 shows good thermal stability at high temperatures, while 8 is even better.

To sum up, Alnico 5 and Alnico 8 are two kinds of magnetic alloy materials with different magnetic properties, which have different advantages in different applications. Alnico 5 and 6 are more commonly used, and Alnico 8 and 9 are high-quality grades. The selection of suitable materials depends on the specific application needs. Such as the required magnetic properties, operating temperature range and other factors.

Browse our various shapes of aluminum nickel cobalt magnet samples; 

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