By Dennis Blacksmith Samarium-cobalt magnets are one of the two types of rare earth magnets specifically covered by the new DFARS 252.225-7052 requirements taking effect in 2027. These high-temperature, high-performance magnets are essential in many defense applications where reliability under extreme conditions is critical. Unlike neodymium magnets, samarium-cobalt magnets maintain their magnetic properties at much higher temperatures, making them ideal for aerospace, naval,