The paper gives a description of the material selection process for a steering knuckle of a passenger vehicle’s independent suspension system, by using two quantitative methods of material selection: Weighted Property Method and Limits on Property Method. After the definition of property requirements that potential materials must meet, digital-logic method has been applied in order to calculate the weighting factors of said properties. The material selection process included the application of Cambridge Engineering Selector for the analysis of diagrams and property values of potential materials. The obtained results indicate that the Weighted Property Method leads to the conclusion that the optimal steering knuckle material is low alloy steel 25CrMo4, while the Limits on Property Method shows that aluminum alloy AlZn5.5MgCu T6 is the optimal material.