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AlNiCo Magnets Description

AlNiCo Magnets are made of the alloy of Aluminum-Nickel-Cobalt which possesses excellent temperature stability and high residual induction. AlNiCo magnets have a low coercive force that limits their applications in many cases. Casting and sintering are two major processes used to manufacture the AlNiCo magnets.

AlNiCo Bar Magnets are the popular shape of AlNiCo magnets. We provide AlNiCo Bar Magnets for various applications. Alnico is an acronym for an own family of iron alloys which in addition to iron are composed basically of aluminum (Al), nickel (Ni), and cobalt (Co), subsequently al-ni-co. additionally, they encompass copper, and on occasion titanium. Alnico alloys are ferromagnetic, with a high coercivity (resistance to loss of magnetism), and are used to make permanent magnets. earlier than the improvement of rare-earth magnets within the Nineteen Seventies, they have been the strongest kind of everlasting magnet. other alternate names for alloys in this own family are Alni, Alcomax, Hycomax, Columax, and Ticonal. The composition of alnico alloys is typically eight–12% Al, 15–26% Ni, 5–24% Co, up to six% Cu, up to 1% Ti, and the balance is Fe. The improvement of alnico commenced in 1931, while T. Mishima in Japan discovered that an alloy of iron, nickel, and aluminum had a coercivity of four hundred oersteds (Oe; zero.07957 kA/m), double that of the first-class magnet steels of the time. We can also produce magnets to custom specifications by request.

Alnico magnets are ideal for corrosive and high heat applications up to 930°F (500°C).

Alnico magnets are commonly used for various types of sensors.

The Alnico Horseshoe Magnet has two magnetic poles close together.  Ideal for school experiments and it makes a great gift. Includes a keeper to help retain magnetic power.

Stanford Magnets specializes in manufacturing and supplying AlNiCo magnets applied in various industrial applications. We have advanced technology, rich experience, and professional engineering technicians in this field. If you require a specific size, please contact us for a quote.

AlNiCo Magnets Properties and Characteristics

• High Magnetic Strength: Alnico magnets are known for their strong magnetic fields, although they are generally surpassed by rare earth magnets such as neodymium.
• High Temperature Resistance: One of the key advantages of Alnico magnets is their excellent ability to maintain magnetic strength at high temperatures, up to about 540°C (1000°F). This makes them suitable for applications where high temperature resistance is crucial.
• Corrosion Resistance: They exhibit good resistance to corrosion and typically do not require additional surface treatments, which can be beneficial in applications exposed to harsh environments.
• Hard and Brittle: Alnico magnets are hard and brittle, making them susceptible to chipping or breaking if mishandled. They cannot be drilled or machined using conventional methods, and any required shaping must be done before the magnetization process.
• Magnetic Orientation: These magnets can be magnetically oriented in the manufacturing process to enhance their magnetic performance in specific directions.

AlNiCo Magnets Applications

Alnico magnets are used in a wide range of applications, including:

• Electric Motors and Generators: Their ability to withstand high temperatures makes them suitable for various motor and generator applications.
• Sensors and Instruments: They are used in certain sensors, meters, and instruments where stable magnetic performance over a wide temperature range is required.
• Pickups for Electric Guitars: Alnico magnets are popular in the construction of pickups for electric guitars due to their specific magnetic field characteristics, contributing to the tone of the instrument.
• Loudspeakers and Microphones: Their magnetic properties are also advantageous in the design of loudspeakers and microphones.

AlNiCo Magnets Manufacturing

Alnico magnets can be made through either casting or sintering processes:

• Casting: The alloy is melted and poured into a mold, then cooled and solidified. Cast Alnico magnets can be produced in complex shapes and sizes but typically have rough surfaces.
• Sintering: Powdered Alnico is pressed into a die and then sintered in a furnace, bonding the particles together. Sintered Alnico magnets have better mechanical strength than cast magnets but are usually limited to smaller sizes.