Carbonation and chloride penetration, which occur as a result of various environmental effects in reinforced concrete structures, cause reinforcement bar corrosion. Physical and chemical deterioration processes caused by corrosion lead to section losses in pitting or homogeneous forms of reinforcement bar. With section losses, decreases are observed in the material characteristic properties of the reinforcement bar such as yielding strength, ultimate/failure strength and strain property. Within the scope of the current study, it was aimed to examine the models used in the existing literature to predict the mechanical properties of corroded reinforcement bars such as yielding strength, ultimate/failure strength and elasticity modulus, as a function of the corrosion ratio. For this purpose, an analytical study will be carried out on reinforcement bars with different reinforcement diameters, corrosion ratios and corrosion types. From the research to be conducted, it is expected that the prediction performances of the corrosion ratios taken into account in the studies in which previous models were developed will show a appropriate harmony with different corrosion ratios.