Modern industries use traditional casting methods for fabricating various structural and engineering components. The cast components are often subjected to dynamic loading conditions and can fail or damage due to matching resonance conditions. Microwave casting has a novel heating ability that can change the dynamic properties of the structure. So it is important to measure the vibrational characteristics of the structural components after their microwave casting. On the other side, metal matrix composites (MMCs) are employed in the high-performance applications, including automotive, aerospace, and structural components. This is due to their superior strength and light weight characteristics compared to conventional metals. In this study, an experimental setup is designed to cast both pure copper and Cu-SiC powder MMC specimens using microwave energy. The casting is performed with a household microwave applicator operating at 2.45 GHz frequency and 900 W power output. The damping characteristics of the microwave-cast specimens are evaluated using experimental modal analysis. The study compares the damping characteristics of pure copper and Cu-SiC specimens and examines how varying the weight percentage of silicon carbide affects the intermolecular damping of Cu-SiC MMC. Results indicate that increasing the SiC content in the copper matrix enhances the damping characteristics of the cast MMC.