does aluminium contain iron
It has been added to some aluminum-silicon alloys containing iron, where it transforms the acicular ss (Ã-aluminum-iron) silicon into a more rounded-aluminum-cobalt iron, phase thus improving strength and. Elongation-aluminum-zinc-magnesium copper alloys containing.0 2 to.19 % co are produced by powder. Metallurgy. copperts effect on aluminum-silicon alloys is to increase strength and decrease elongation, but it does not make these alloys heat treatable. 4 C 3, but carbide formation with other impurities such as titanium is possible. A1 4 C 3 decomposes in the presence of water and water vapor, and this may lead to surface pitting.