Abstract: Two kinds of graphite with different hardness and strength were inlaid in the Cu-15Ni-8Sn alloy matrix. The friction pairs of Cu-15Ni-8Sn copper alloy inlaid graphite material and 05Cr17Ni4Cu4Nb precipitation hardened stainless steel were obtained. The friction and wear properties of the material under different loads (490,980,1 470 N) and different lubrication conditions (dry friction and wet friction) were studied. The results show that under dry friction condition, the friction coefficient of the materials almost increased with load, and the dry friction coefficient of the material with higher hardness and strength graphite was smaller than that of the material with lower hardness and strength graphite. Under wet friction condition, the friction coefficient of the material with higher hardness and strength graphite increased with load, but was similar with that under dry friction condition. With increasing load, the wear loss under dry friction and wet friction increased. The wear mechanism of graphite was abrasive wear accompanied with fatigue wear under dry friction condition, and was abrasive wear and erosive wear under wet friction condition.