In order to choose the best material for a given design and manufacturing process, decision-making is crucial. The researchers employed tools to aid in their decision-making because proposing a novel material is usually difficult. The selection of the piston material is handled in the current paper using Multi-Attribute Decision Making (MADM) techniques to ensure the best design process. A comparison of the weights of subjective and objective criteria for a few MADM approaches is conducted. Sensitivity analysis is done to show that the ranking order for performance scores is consistent despite the fact that the weights of the criteria for each alternative differ.