Patent ID: 8623518

Claim:
A sliding material comprising a steel back metal layer, and a Cu alloy layer comprising 0.5 to 15 mass % of Sn, 0.2 to 5 mass % of inorganic compound particles, and the balance being Cu and unavoidable impurities, wherein the inorganic compound particles are dispersed in a Cu alloy matrix, and the inorganic compound particles have an average size in a range of 1 to 10 μm, wherein a ratio of true density of the Cu alloy matrix in relation to that of the inorganic compound particles is in a range of 0.6 to 1.4, and a ratio of thermal expansion coefficient at 20 to 300° C. of the Cu alloy matrix in relation to that of the inorganic compound particles is in a range of 1.5 to 3.0, and wherein an average distance between the inorganic compound particles dispersed in the Cu alloy matrix is in a range of 5 to 50 μm.