Elastic scattering cross sections of keV protons with C, Ti, Mo and W atoms are investigated using the partial wave expansion technique. Special features of the differential cross sections obtained are the oscillation behavior due to interference of many waves and the sharpness around zero degrees. The latter feature agrees with the Lindhard cross section if the Thomas-Fermi potential is used as a scattering potential. The most important item in our calculational results is the fact that the cross sections never diverge at zero degrees, so that the total cross section can be directly estimated. The dependence of the total cross section on the ion energy is weaker than an inverse proportionality to energy, which a high energy Born approximation derives.