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Alnico magnets are renowned for their high remanence, low coercitivity, and temperature stability. The properties for each grade at room temperature are listed in Tables 1 and 2. Furthermore, additional information such as demagnetization curves for different temperatures is available for download in the datasheets. Table 3 outlines the general characteristics of Alnico magnets. Figure 2 illustrates the temperature stability, depicting the demagnetization curves of Alnico 5 grade from -180 C to +300 C. This figure demonstrates how the output of the magnet remains constant when the working point is near BHmax over a large temperature range.Table 1: Typical magnetic properties of cast Alnico magnet
Table 2: Typical magnetic properties of sintered Alnico magnet
The physical properties of Alnico magnets are presented in Table 3. It should be noted that these values should not be considered as guaranteed, as they are not monitored during the manufacturing process.Table 3:Physical Properties of Alnico magnets
Surface Treatment: Alnico magnets typically do not need any protection from corrosion and can be used without a coating. However, some applications may require a smooth surface, and in these cases, a protective coating can be applied. 
Notes:
The corrosion resistance of these coverings fluctuates depending on the form of magnets, such as chamfers and inner rings, in diverse surroundings.
Alnico Disc Magnets - The Perfect Tool for Science and Education If you're looking for a reliable and effective magnetic tool for your science and education needs, Alnico Disc Magnets are a great choice. These magnets, made of a special alloy of aluminum, nickel, and cobalt, offer a combination of high magnetic strength, stability, and durability, making them ideal for a wide range of scientific and educational applications. At their core, Alnico Disc Magnets are designed to provide a strong and uniform magnetic field, making them suitable for various experiments, demonstrations, and educational activities. With their disc-shaped design and versatile magnetic properties, Alnico Disc Magnets can be used to demonstrate magnetic forces, magnetic fields, and magnetic induction, among other concepts. One of the key advantages of Alnico Disc Magnets is their high magnetic strength and stability over time. With a high coercivity and a low temperature coefficient, these magnets can maintain their magnetic properties even under varying temperatures and frequent use. Additionally, Alnico Disc Magnets have a low magnetic hysteresis, which means they can hold and release materials quickly and easily, without leaving any residue or damage. At Honson Magnetics, we offer a range of Alnico Disc Magnets in various sizes and strengths to fit your specific science and education needs. Our magnets are manufactured with strict quality control and precision machining, ensuring a consistent and reliable performance. Contact us today to learn more about Alnico Disc Magnets and how they can enhance your science and education activities with their high magnetic strength, stability, and versatility.