Alnico magnets are composed primarily of alloys of aluminum, nickel, cobalt, copper, iron, and sometimes titanium, which possess characteristics like high residual induction and excellent temperature stability . Alnico products are widely used in applications such as meters, motors and sensors. Alnico magnets have a variety of shapes and sizes. Some of the common shapes are blocks, discs, rings, horseshoes, bars and holding magnets. Some of them can be painted with red or blue.
- High residual induction
- Excellent temperature stability
- Wide range of working temperatures, up to 550C
- Good corrosion resistance
- Wide range of complex shapes and sizes available
- Can be plated or painted
- Ease of magnetization
- High field strengths at medium prices
- Lower initial tooling cost
The coercivity values, the high remanence and thermal stability of Alnico make it the most cost effective material for certain applications:
- Micro Motors
- Seismo-Sensors
- Hysteresis Brakes
- Electronic devices
- Instrument Making
- Meters: odometer, electrical meter, water-meter, etc.
- Audio and Speakers
- Precise Instruments for Aerospace and defense Technologies
Casting and Sintering are two major processes used to manufacture the Alnico magnets.