Simulation on the SCC Susceptibility of Pipeline steel in Soil Rich in Nitrate

The SCC susceptibility of steel 16Mn in nitrate solution was studied. The results showed that the steel 16Mn is more susceptible to SCC when the temperature increased and the polarization by applied po- tential will accelerate (anodic polarization or retard (cathodic polarization the process of SCC. The steel 16Mn is susceptible to SCC in nitrate environment, which is controlled by electrochemical process.