In the expression for solid solution strengthening model that has been widely used in the literature use a linear form consisting of strength coefficient, and concentration of elements in wt.%. In this method, the strength coefficient of Mn is considered negative in some literature, which is not well understandable. However, in several literatures used for multicomponent alloys the expression is nonlinear and concentrations are raised to a certain power like (1/2 and 2/3). Kindly explain the correct approach for the calculation of theoretical yield strength using solid solution strengthening model.