The Brasses are copper alloys. The main element is zinc brass. The most widespread are Cu and Zn binary alloys with different contents of zinc. Binary brass make up a relatively large group of copper alloys in which zinc content varies from 2.5 to approximately 49 %. In addition, there brass, which, besides zinc has other elements. These alloying elements give the brass its material properties. According to the zinc content is divided into low, medium and high percentage of zinc brass.