99.5% performance engineering ceramics balls are as follows: density density: 3.8g/cm3 hardness vickers: 1800Kg/mm bending strength bending strength: 220Mpa compressive strength compressive strength: 1500Mpa fracture toughness of fracture toughness: 4.6Mpa? M1 / 2 maximum temperature Max Use Temperature: 1850 Degrees Celsiuselastic modulus elastic modulus: 380Gpa thermal expansion coefficient coeffient of thermal expansion: 9.1X10-6 / k Poisson ratio poissom ratio: 0.27 Thermal Conductivity (500 Degrees Celsius) Thermal Conductivity: 25W/mk than the resistivity ( 600 Degrees Celsius) resistance: 108Ω? mm2 / m acid corrosion: strong

Alumina Chemical Packing balls