In the process of manufacturing a product, the manufacturing industry always prioritizes safety, quality, and profitability. One product that adheres to these criteria is the outer support for solar water heaters. Currently, the material used for the outer support of solar water heaters is SS 304. In this study, an analysis of alternative materials for the outer support of solar water heaters was conducted with the aim of finding materials that can fulfill the outer support function at a relatively lower cost, without compromising its functionality, and are readily available or abundant in the market. The methodology employed in this study utilizes the Analytical Hierarchy Process (AHP) and CES Edupack software for the material selection process. Several mechanical property tests were conducted, including tensile tests, hardness tests, and corrosion resistance tests, to determine the mechanical properties of the materials. Based on the outcomes of the three material tests, we have identified alternative materials that adhere to the material criteria established by the manufacturing industry for the outer support of solar water heaters, specifically AISI 304 and AISI 201.