By Dennis Blacksmith One of the lesser-known complexities of the new DFARS 252.225-7052 rules involves dopants used in rare earth magnets. Dopants are small amounts of additional elements intentionally added during the manufacturing process to enhance the performance of neodymium-iron-boron and samarium-cobalt magnets. Common dopants include dysprosium, terbium, praseodymium, and other rare earth elements. These additives are critical for improving temperature resistance, mag

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,

By Dennis Blacksmith Neodymium-iron-boron magnets are among the most critical materials affected by the new DFARS 252.225-7052 requirements, and they present one of the clearest examples of supply chain vulnerability. China currently dominates global production of neodymium-iron-boron magnets, controlling approximately 80-90% of the world’s supply. This heavy reliance on a single country creates significant national security and supply chain risks for the United States. These