The CuZnPb brasses are used on a large scale in manufacturing component details for hydraulic driving or regulation devices, as well as for small and huge vanes. Partially the material is used for manufacturing the bodies and partially for sealing seats. During normal operation those pieces are subjected to cavitation erosion. The present paper analyzes the cavitation erosion behavior and the resistance of the brass CuZn39Pb3 used for manufacturing the mentioned details. For the experimental researches was used the standard vibration device realized in the Timisoara Polytechnic University Cavitation Laboratory. The evaluations are made on the basis of the characteristic curves but also by analyzing the eroded areas with great performance microscopes. The behavior of the tested brasses is also compared with those of some etalon materials. The conclusions show that the researched brass can be used only for details working in condition of poor cavitation erosion. At normal or intense cavitation erosion it is necessary at least to use methods to increase the resistance of this materials.
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