Time of flight neutron diffraction (ToF-ND) is a powerful technique for the characterization of the micro-structural properties of the phases present in the sample. The Rietveld refinement is an analytical method able not only to give quantitative determination of the phases included in a sample, but also to determine, through the parametrization of the shape and relative intensity of the Bragg peaks, microstructural parameters which are directly related to some specific variables. We propose to analyze different metal reference samples with several anisotropic characteristics based on BCC (ferrite) and FCC (copper) structures.