In order to simulate cooling rates upon casting of a binary Fe-25wt%Ni, I need thermodynamic data (specific heat, latent heat) and density for this alloy.
An evaluation of the Fe-Ni system, including thermodynamics and lattice parameters, can be found in Swartzendruber et al., J. Phase Equilibria 12 (1991) 288-312. A more recent evaluation of the thermodynamics is Cacciamani et al., Intermetallics 18 (2010) 1148-1162.