<p>This research focuses on Martensitic stainless steel (MSS) in service conditions where there is a significant amount of demandingness. Some of the possible applications include turbine blades, valves, cutting tools, and various components used in automobiles. Among the possible heat treatment processes for Martensitic stainless steel, tempering is identified as a critical process for modulating the physical properties of the material. The main aim of the research is to evaluate the impact of temperature and time on tempering process and microstructural changes in Martensitic stainless steel. The research also evaluates the impact of temperature on the degradation of Martensitic stainless steel and its improvement through an increase in toughness, ductility. The research also evaluates the impact of temperature on Martensitic stainless steel and its relationship to stiffness. The research discusses the wear mechanism of Martensitic stainless steel and its enhancement towards tempering process.</p>