fabrication techniques, such as - forming or machining. The composition of copper casting
alloys may differ from those of their wrought counterparts for a variety of reasons.
Usually casting allows greater latitude in the application of alloying elements, because
the effects of composition on cold or hot working properties are not significant.
Most of the copper-base casting alloys that contain tin, lead or zinc have moderate tensile
and yield strengths, low to medium hardness, and high elongation. In applications that
require high tensile or yield strength, the aluminum bronzes, silicon brasses, manganese
bronzes, silicon bronzes and some nickel silvers are used instead. Most of the high
strength alloys have good resistance to corrosion and wear.
The properties of castings depend on the size of section and the process of casting.