Cold spraying is quite a new process, which is an effective method to deposit dense and pure coatings. The aim of this study was to investigate microstructures and mechanical properties (hardness and adhesion) of the cold sprayed coatings. The coating materials were copper, aluminum, nickel, zinc and tantalum. The substrate materials were carbon steel and copper. Influence of heat treatment on mechanical properties was studied, especially different heat treatment times and temperatures. The hardness of the cold sprayed coatings was higher than thermally sprayed coatings and bulk materials. After heat treatment the hardness of the cold sprayed coatings decreased and the ductility increased. Corrosion resistance of the cold sprayed coatings were also studied. The corrosion resistance was tested with salt spray (fog) testing and open cell potential measurements. The corrosion tests showed some open porosity but some parts of the cold sprayed coatings appeared to be fully dense, which showed their potential to corrosion protection.