alnico (aluminum Nickel Cobalt)

Composition: Aluminum (Al), nickel (Ni), cobalt (Co), iron (Fe), with trace copper (Cu) and titanium (Ti). Cost-effectiveness: Moderate price and magnetic performance, but exceptional stability for specialized applications. Application Fields: Traditional instruments (ammeters, voltmeters), sensors, automotive ignition systems, magnetic chucks. Magnetic Properties: Low magnetic energy product (5–9 MGOe); high remanence but extremely low coercivity, prone to demagnetization. High Curie temperature (~800°C); minimal reversible temperature coefficient. Operating Environment: Heat-resistant (operating temperature: -50–550°C); excellent stability. Brittle and difficult to machine; avoid strong magnetic field exposure.