This document discusses material optimization of the upper control arm for a double wishbone suspension system. It begins by describing the components and purpose of a double wishbone suspension system. It then outlines the objectives of optimizing the material of the upper control arm to reduce weight and cost while increasing strength. Various materials are considered and analyzed using FEA software to determine the best material. Based on the results, AISI 4130 steel is identified as having the best performance with a deformation of less than 1mm and a safety factor of 1.5, making it a suitable and sustainable material for the upper control arm.