In general the Efficiency of a centrifugal pump (ηo) = Mechanical efficiency (ηm) × Volumetric efficiency (ηv). Most of the study has been done in improvement of Hydraulic efficiency but overall efficiency depends on both factors Hydraulic and Mechanical. Mechanical components – for example impeller weight and structure produces a mechanical loss that reduces the power transferred from the motor shaft to the pump or fan impeller. Also strength of the pump reduces due to stress corrosion problems in impeller which can be minimized using alternate material having same/more strength. The modelling of the impeller will be done by using solid modelling software, CATIA. The meshing and boundary condition application will be carried using Hypermesh, it is also used to produce good and optimal meshing of the impeller to obtain accurate results and analysis has been done by using ANSYS. A static analysis on 3HP pump impeller has been carried out to examine the stresses and displacements of the centrifugal impeller. Conventional MS material is replaced with glass fiber composite material. After getting safe results from analysis, model will be fabricated and testing will be done on UTM.