Abstract: Based on an analysis of existing thermodynamic data, a two-parameter model for estimating the specific heat of a dual intermetallic is developed. It can estimate the specific heats of dual intermetallics composed of simple metals involving Fe, Si, Nb, Ti, Cu, Co, Mg, etc. The specific heats of 132 intermetallics are estimated, such as AlCa, AlCo, CrNi, FeTi, FeSi, FeNb, and MoSi. It is found that the average error of specific heat is about 2.74J·mol^-1·K^-1 and the standard deviation is 3.84J·mol^-1·K^-1. The precision of standard entropy estimated by the two-parameter model is higher than that estimated by the ion binding model.