The Slow Strain Rate Test (SSRT) technique was used to investigate the stress corrosion cracking (SCC) susceptibility of sigmatized super duplex stainless steel (SDSS) grade UNS S32760 exposed to a simulated oil field brine containing CO2/H2S at 80ºC. The sigma phase was precipitated via heat treatment at 845ºC for various durations (0 to 12 mins). Results show that low levels (less than 2%) of sigma have no profound impact on the mechanical and corrosion properties of SDSS. However at higher levels (greater than 2%) of sigma phase there is severe loss in ductility and increased corrosion rate. This study also explores the effect of varying degrees of cold work on sigma phase precipitation. Fractographic observations using scanning electron microscopy (SEM) have shown that the fracture mode shifts from ductile to transgranular cracking with increasing levels of sigma phase. Electron back scattered diffraction (EBSD) results show that crack propagation occurs at the interfaces of the sigma/austenite boundaries. The local misorientations in sigma/ferrite phase are low compared to austenite and ferrite boundaries.