Under high temperature and water lubrication environment,the properties of high temperature non magnetic alloy GH05 material for bearings will change,which will affect the wear coefficient of material so as to affect the bearing wear performance,resulting in increased vibration and noise of bearings.The friction and wear tests of high temperature non-magnetic alloy GH05 under high temperature and water lubrication were carried out by using a high temperature friction and wear tester,and the effects of temperature,load and lubrication on the friction and wear properties of the material were analyzed.The wear coefficient of the material was obtained,which provided test data for bearing life evaluation under special working conditions and lubrication conditions.The results show that the friction coefficient of the bearing material GH05 is about 0.53 at 300 ℃ and about 0.35 with water lubricating medium.Compared with the friction coefficient at 25 ℃,the friction coefficient at 300 ℃ has a smaller fluctuation range and a stronger stability.Compared with the friction coefficient under dry friction state,the friction coefficient under water lubrication condition is smaller,and the stability of friction coefficient is better.With the increase of temperature,the wear resistance of the GH05 material decreases.At the same test load,the wear volume of GH05 material under dry friction at high temperature of 300 ℃ is the largest,and the smallest under water lubrication at room temperature.The wear coefficient of GH05 is from 1.93×10-7mm2/N to 3.02×10-7mm2/N under dry friction at high temperature of 300 ℃.