What kind of copper is cw617n copper

CW617N belongs to the German standard lead brass, executive standard: DIN EN 12164-1998

CW617N is characterized by good machinability, good mechanical properties, can withstand cold and hot pressure processing, easy welding, good brazing, good stability to general corrosion, but has a tendency to corrosion cracking, mainly used for air conditioning valves , hardware machinery, etc.