The sliding member

PROBLEM TO BE SOLVED: To obtain a sliding member capable of showing slidability equal to that of the one contg. Pb in the sliding face contg. no Pb by providing the sliding face with an opposite material in the surface of a base material with a coating layer contg. Sn, In or Ag, and the balance Bi with inevitable impurities. SOLUTION: On the sliding face of a base material composed by lining a back plate 1 made of steel with a Cu-Sn alloy layer 2, preferably, as an intermediate layer, an Ni plating layer 2' is formed, and, on the surface, a coating layer 3 contg. at least one kind among, by weight, 0.1 to 25% Sn, 0.1 to 10% In and 0.5 to 10% Ag, and the balance substantial Bi with inevitable impurities is formed. This coating layer 3 is formed, preferably, by subjecting the surface of the base material to plating treatment by electroplating, chemical plating, a PVD method or the like, and, its thickness is suitably regulated to about 1.0 to 30 μm. Even though the coating layer 3 composed of the Bi alloy does not contain Pb, it is excellent in fitness, seizure resistance, lubricity and wear resistance and has suitable hardness.