Induction-melted Cu-(0, 10, 20, 30, 40)%Zn allays were oxidized between 600 and 770℃ in air. With an increase in Zn contents, the oxidation resistance increased and, correspondingly, thin scales were formed. However, the scale adherence decreased with an increase in Zn contents. The oxidation products formed on Cu-(0, 10)%Zn consisted of ZnO with a small amount of copper oxides, while those formed on Cu-(20, 30, 40)%Zn consisted of (Cu₂O + CuO) with a small amount of ZnO.