Alnico

Alloy

How Many Materials Make Up Alnico?

  • Aluminum: 8-12%
  • Nickel: 15-26%
  • Cobalt: 5-24%
  • Copper: Up to 6%
  • Titanium: Up to 1%
  • Iron is used to balance the alloy.

How was Alnico discovered?

  • Alnico was developed in 1931, when T. Mishima discovered that an alloy of Iron, Nickel, and Aluminum, had a force of 400 oersted which was better then most magnets at the time.

How is Alnico manufactured?

  • Alnico is mainly used for magnets, and the magnets are produced by casting or sintering processes. Anisotrophic (physical property that has a different value when measured in different directions) are oriented by hitting above a really high temperature. Isotropic and Anisotropic Alnico require proper heat treatment to develop optimum magnetic properties.

How much does Alnico cost?

  • Alnico usually cost $20.00 per pound.

Physical Properties of Alinco.

  • Metallic silver/gray in color.
  • No odor.
  • Can have a density of 6.8 g/cm³ to 7.3 g/cm³.

Chemical Properties of Alnico.

  • Has a melting range of 1,260°C (2,600°F) to 1,398.889°C (2,550°F).
  • Resistance to corrosion.
  • Isotropic properties vs Anisotropic properties.

What is Alnico used for?

  • Alnico is used for magnets. Unlike other magnets, Alnico can still be magnetic at high temperatures and has the property of electric conductivity. Alnico magnets are commonly used in magnetic compasses, telephone receivers, loudspeakers, and instruments that measure electric current.

Did you know?

  • A magnet made of Alnico is many times stronger than one of similar size made of Iron or Steel.
  • Also that Alnico magnets are used in electric guitars for a more edgy sound.
BKP Tutorial: Ceramic vs Alnico V magnet in a bridge humbucker