Perfect for High Temperatures

Samarium cobalt magnets resist corrosion and retain most of their energy up to 575° Fahrenheit, making them ideal replacements for Alnico magnets when high temperature use or miniaturization is required. They have good temperature stability—maximum use temperatures are between 250 and 550°C; Curie temperatures range from 700 to 800°C.

They will work in applications that require the system to function at cryogenic (or very hot) temperatures—over 350°F or 180°C. In applications where performance is required to be consistent with temperature change, the flux density of a samarium cobalt magnet will vary under 5% per 100°C change in temperature (in the range of 25–250°C or 77-480°F). Rare earth sintered samarium cobalt magnets are extremely resistant to demagnetization and they can operate at temperatures up to 500°F (260°C).