This specification covers one type of samarium/cobalt permanent magnet.Thhis product has been used typically for components of electrical, electronic, and magnetic devices requiring an energy level of 18 MGOe (143 kT-A/m) for use at service temperatures up to 250 mDC. Nominal composition of 33% samarium and 67% cobalt with an energy level of 18 MGOe (143 kT-A/m) with 250 mDC maxiumum service rating.