Strontium Aluminum special alloy has an important role in the
solidification of Si-Al system.
During the eutectic modification, needles and silicon boards are transformed
into a thin, fibrous structure. The porosity of the cast pieces is
then redistributed, increasing their sealing and ductility properties.
The use of strontium in hypoeutectic systems is largely used and considered
as the most efficient one as a structure modifier.