Powder Metallurgy route was used to achieve a dispersion of 5% to 30% copper phosphorus particles (Cu-P) into the aluminium matrix. Thus, several aluminium-copper phosphorus Cu-P powder mixtures were obtained by mixing on a planetary mill. Die pressing and hot extrusion of these powder mixtures is the manufacturing way to achieve bars of 5mm of diameter of Al+Cu-P materials. Properties like density and hardness are improved when the content of Cu-P is increased. Microstructure study shows an uniform distribution of Cu-P particles on transversal section to extrusion way but an alignment of these particles on the extrusion way. Al diffusion is happened on Cu-P during heating before extrusion, although the extrusion temperature was decreased to 450degreesC. Thermal behaviour was evaluated on as extruded materials through dilatometer study. Linear expansion coefficient of Al+Cu-P materials was close to that obtained for aluminium. However maximum linear expansion and the temperature at which this occurs is function of the Cu-P content as well as heating rate. As dilatometer heating leads to local fusion,on material, density is decreased and there is a pore formation probably due to degassing of confined gases on initial powders. However these characteristics are far from those requested on aluminium foams.