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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

AlNiCo Magnets Applications

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

AlNiCo Magnets Manufacturing

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

FAQ

What are Alnico magnets made of?
Alnico magnets are primarily composed of aluminum, nickel, and cobalt, with the addition of copper and sometimes titanium to enhance specific properties. The exact composition can vary based on the required magnetic and physical characteristics.
How strong are Alnico magnets?
While Alnico magnets are known for their strong magnetic fields, they are generally less powerful than rare earth magnets like neodymium. However, their strength is sufficient for many applications, including electric motors, sensors, and musical instrument pickups.
Can Alnico magnets withstand high temperatures?
Yes, one of the key advantages of Alnico magnets is their ability to maintain magnetic performance at high temperatures, up to about 540°C (1000°F). This makes them suitable for applications where high temperature resistance is crucial.
Are Alnico magnets corrosion-resistant?
Alnico magnets exhibit good resistance to corrosion and typically do not require additional protective coatings. This property makes them suitable for use in environments where corrosion could be a concern.
Can Alnico magnets be machined?
Alnico magnets are hard and brittle, which makes them difficult to machine. They cannot be drilled or cut using conventional methods. Any necessary shaping must be done before the magnet is magnetized, typically through grinding with diamond tools.
How are Alnico magnets manufactured?
Alnico magnets can be manufactured through casting or sintering processes. Casting involves melting the alloy and pouring it into a mold, while sintering involves pressing powdered Alnico into a die and heating it. Each process offers different characteristics in terms of strength, temperature resistance, and achievable shapes.
What applications are Alnico magnets used for?
Alnico magnets are used in a variety of applications, including electric motors, sensors, loudspeakers, microphones, and pickups for electric guitars. Their high temperature resistance and magnetic stability make them suitable for a wide range of industrial and consumer applications.
How do Alnico magnets compare to other types of magnets?
Alnico magnets offer a balance between strength, temperature resistance, and corrosion resistance. While they are not as strong as rare earth magnets, their ability to perform at high temperatures and their stability over a wide range of temperatures make them irreplaceable in certain applications.
Can Alnico magnets be demagnetized?
Alnico magnets can be demagnetized if exposed to a strong demagnetizing field or heated above their Curie temperature. However, under normal conditions and within their operating temperature range, they maintain their magnetization well.
How to care for Alnico magnets?
To maintain the longevity and performance of Alnico magnets, avoid dropping or striking them, as they can be brittle and prone to chipping or breaking. Also, keep them away from strong demagnetizing fields. No special maintenance is required for corrosion protection.

Protocols and articles

Related Articles
Comparing Alnico 2, 3, 4, 5, and 8 Pickup Magnets: A Comprehensive Overview
Alnico Magnets: From Electric Guitars to Particle Accelerators
Alnico vs. Rare Earth Magnets: Understanding the Differences and Applications

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