Brass is solid solution strengthened copper alloy with zinc. As the zinc content increases in the alloy, the strength improves, but is accompanied by losses in conductivity and ductility. Moreover, it should be noted that as the zinc content rises, the inclination to stress corrosion cracking increases in the event of exposure to an ammonia atmosphere. This type of corrosion can, however, is combated in many cases by the removal of thermal stress. As the zinc content rises, the user may under certain circumstances
have an economic advantage due to the different metal values.