ABSTRACT
Being copper–based alloys, aluminium bronzes have certain physical properties similar to other copper alloys. Aluminium bronzes have good elastic properties which is an advantage for shock resistance, but which render these alloys less rigid than steel from a structural point of view. As with thermal conductivity, the electrical conductivity of aluminium bronzes is influenced by a combination of composition and temperature and the effects of these are very similar for both forms of conductivity. Available figures for the thermal linear expansion of aluminium bronzes. It will be seen that alloy composition makes little difference to the coefficient of thermal expansion, but that it increases with temperature range. The damping capacity of alloys with low aluminium content is dependent on pre-treatment: it increases as the quenching temperature is raised and decreases with aluminium content. Manganese is 16% lighter than copper and consequently a high proportion of manganese results in slightly lower alloy density.
