Abstract Martensitic stainless steels have been widely used for oil country tubular goods because of their high strength and excellent corrosion resistance in CO2 gas wells. Recently, much attention has been paid for application of these steels in light sour environments even high strength. In this paper, corrosion resistance of high strength super 13%Cr martensitic stainless steels (Low C-13%Cr-2%Mo-5%Ni) is summarized. High strength super 13%Cr martensitic stainless steels, whose HRC 31 maximum, showed excellent SSC resistance in milder environment than pH=4.0 with 0.03bar H2S for simulating formation water at room temperature. This steel can be used in light sour environments even if high strength. In addition, all specimens showed excellent corrosion resistance at high temperature.