Some thermoelastic properties, such as, second- and third-order elastic constants (C-ij, C-ijk) thermal expansion coefficient (beta), Anderson-Grunesien parameter (delta), Gruneisen parameter (gamma), bulk modulus (B) are calculated for some fee crystals. Total energy (W) is assumed to be the sum of the central pairwise potential (extended generalized exponential energy EGEP) and volume dependent energy (W-v). In this model, the temperature is related to the total energy as W-0(r)exp[-pik(B)Tr/(hV(F))]. The obtained results are compared with the available experimental data and, generally, the agreement is good. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.