Abstract: A method in which to a brass containing 61-66% of copper there is added 0.02% of an alloying element such as arsenic, antimony or phosphorus and up to 4% of lead and in the case of chill casting and pressure die casting alloys 0.05-0.8% of aluminum, the remainder being zinc and usual impurities from the raw materials used, and in which the alloy after chill casting, pressure die-casting or sand casting, after extrusion or, where applicable, after hot pressing of parts cut from extruded rods, is heated to a temperature in the interval between 450 and 600.degree. Celcius for a period so selected that the .beta.-crystals are broken up, thus avoiding the occurence of a coherent structure of .beta.-crystals through the brass.