KEOS5 equation of state description
KEOS5 is an intermediate form of caloric semi-empirical equation of state (EOS) for
metals, alloys, minerals etc. In its general form the model
specifies pressure as a function of the specific volume and internal
energy. Currently equations of state of this type are constructed
for 36 substances.
You can learn more about the model of KEOS5 equation of state by
downloading the file in pdf format.