One of the most widely used materials for high-temperature ceramic tubes is alumina. With a melting point of around 2072°C, alumina boasts exceptional thermal stability and high thermal conductivity. Its resistance to wear and corrosion makes it an ideal choice for applications involving harsh chemical environments. Alumina tubes are frequently used in furnace linings, thermocouple protection, and electrical insulation. The material’s high mechanical strength and hardness also contribute to its widespread use in demanding industrial settings.