The interest in eco-friendly energy is increasing for environmental conservation, polymer electrolyte membrane fuel cell(PEMFC) are attracting attention as alternative power sources. Research on metallic bipolar plates, one of the fuel cell components, is actively conducted. Since the operating condition of the PEMFC is strong acidity in which sulfuric acid(H2SO4) and hydrofluoric acid(HF) are mixed, the durability of the metallic bipolar plates is very important. In this research, electrochemical characteristics and corrosion damage behavior of 304, 316L stainless steel, 6061-T6 Al alloy, Inconel 600 were analyzed through potentiodynamic and potentiostatic experiment with variables. As a result of potentiodynamic experiments for 4 specimens with chloride concentrations in accelerating solution that simulated the cathode condition fo PEMFC, 316L stainless steel presented excellent corrosion resistance under all experimental conditions. The reason for the difference in electrochemical characteristics and corrosion damage behaviors is considered to be the effect of the molybdenum contained in 316L stainless steel. Molybdenum has important characteristics that reduce the defects and form stable oxide films. To evaluate the corrosion damage behavior at normal condition and abnormal conditions of PEMFC, potentiostatic experiment was carried out in accelerating solution. And another potentiostatic experiment was performed in US Department of Energy(US DOE) standard solution for investigating the corrosion characteristics by normal and abnormal conditions of PEMFC. As result of experiments, it was found that test time and applied potential are important variables in the growth of pitting corrosion. In addition, 316L stainless steel did not meet the corrosion resistance of bipolar plates by DOE. Thus, surface treatment on 316L stainless steel is essential for the application of bipolar plates for PEMFC.