... thermal shock resistance6, Good chemical resistanceTypical Uses1, Rotating bearing balls and rollers2, Cutting tools3, Engine moving parts-valves,turbocharger rotors4 ... hardnessTypical Uses1, Precision ball valve balls and seats2, High density ball and pebble mill grinding media3, Rollers and guides for metal ... liners6, Heat exchangers7, Semiconductor process equipment high precision ceramic balls