PERFORMANCEOF HIGH STRENGTH SUPER 13CR MARTENSITIC STAINLESS STEELS

摘要

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