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Stable, conductive, and thermally robust

Why AlNiCo Magnets Still Matter in High-Precision Applications

AlNiCo magnets—an alloy of aluminum, nickel, cobalt, and often iron or copper—are known for their exceptional thermal stability, high magnetic flux density, and low coercivity. While newer rare-earth materials offer higher energy products, AlNiCo still plays a critical role in applications that demand predictable magnetic behavior across extreme temperature ranges—up to 550°C and beyond.

Because of their excellent conductivity and the ability to produce uniform and repeatable magnetic fields, AlNiCo magnets are ideal in open magnetic circuits, low-induction sensing, and analog signal environments. Their long-term stability, linear response, and low temperature coefficients make them irreplaceable in certain metrological and measurement-critical systems.

Production Techniques and Shape Freedom

AlNiCo magnets are produced either by casting (for complex shapes and large sizes) or sintering (for tight tolerances and smaller geometries). Cast AlNiCo allows intricate net-shape parts with minimal machining, ideal for precision assemblies. The material can be magnetized along complex axes and multipole patterns.

Thanks to their mechanical strength, AlNiCo magnets can be easily integrated into housings or mechanically clamped without risk of cracking—unlike many brittle rare-earth magnets.

Where AlNiCo Is the Right Choice

  • Sensors and analog signal pickups
  • Professional microphones and guitar pickups
  • Aerospace and defense instruments
  • Magnetic scales and measuring systems
  • Scientific instrumentation (flux meters, gaussmeters)
  • Magnetic clamps and holders with stable force across temperature

MagnetIQ’s Role in AlNiCo-Based Engineering

MagnetIQ offers deep expertise in integrating AlNiCo into hybrid and high-precision assemblies. We support customers with:

  • Material selection between cast and sintered grades
  • Optimization for temperature linearity and flux shaping
  • Magnetic circuit design for repeatable response
  • Tooling for controlled magnetization and fixture testing
  • Integration into combined AlNiCo + Hall sensor solutions

AlNiCo may be a classic, but it is far from outdated—we engineer it for modern precision.

Download AlNiCo Datasheet