Brasses and bronzes are the two main alloys used in garden design—especially for sculpture or sculptural elements such as containers and urns.
Brass is an alloy of copper and zinc, with between 60 and 90 per cent copper to 10–40 per cent zinc: a high copper content forms a reddish brass, while a low copper content gives a silvery-white finish. A zinc proportion higher than 36 per cent yields a much stronger, harder brass; less than 36 per cent zinc and the brass will be ductile, and can be worked into complex shapes. Resistant to corrosion and easily machinable, brass is of use in garden ornaments such as sundials and special fixings.
Bronze is a copper and tin alloy, with the copper content ranging from 75 to 95 per cent copper. Gun metal ...