https://www.tymagnetics.com/products/alnico-magnets/ AlNiCo magnets definition: alnico magnets short for aluminum-nickel-cobalt magnets, are a type of permanent magnet known for their excellent temperature stability, high magnetic flux density, and strong resistance to demagnetization. They were one of the first commercially available permanent magnet materials and have been used in a wide range of applications for many decades. Tengye is an alnico magnets china factory in China, providing types of AlNiCo magnets.