K3Os

K₃OsOs is an osmium-containing ceramic compound belonging to the family of refractory oxides and mixed-metal ceramics. While not widely documented in mainstream engineering applications, this material falls within the research space of high-density ceramic systems, where osmium compounds are explored for specialized applications requiring extreme hardness, chemical inertness, and thermal stability. Engineers would consider osmium-based ceramics primarily in niche sectors where cost is secondary to performance in the most demanding environments.