Lightweight metallic porous materials with high energy absorption efficiency are of increasing interest for advanced energy materials, impact mitigation, and structural protection applications. Such structural and high-performance energy-absorbing materials are mostly used in automotive, aerospace, and protective applications, which drive innovation in metallic foams. Silicon carbide (SiC)-reinforced aluminum alloy (AlSi10Mg) attracts attention across the globe in a variety of areas, ranging from aerospace, automotive, heat exchangers, electronic components, and biomedical implant scaffolds. The porous AlSi10Mg-SiC composite material provides good mechanical properties and wear resistance, and is applied to lightweight structural components and tribological parts. The materials are mostly designed for energy absorption and impact resistance applications, where the mechanical properties are strongly influenced by the porosity, pore size, and SiC content in the materials. In this investigation, porous AlSi10Mg and AlSi10Mg-SiC are investigated under compressive loading conditions. The samples were manufactured using a replication casting process that provides microstructural uniformity in the material. The porous structure was designed with an average pore size of 0.8 – 1.2 mm. Quasi-static compression testing was performed at strain rates of 0.01 s⁻¹ and 0.001 s⁻¹. Quasi-static uniaxial compression tests were conducted to evaluate compressive strength, plateau stress, and energy absorption capacity. The material deformation behavior under compressive loading was analyzed by stress–strain curves from the available data resources. The work absorption behavior and its efficiency were analyzed in a material deformation regime. This research indicates that the energy absorption behavior is primarily influenced by the strain rate rather than the size of the porous structure. Additionally, higher strain rates exhibit higher energy absorption characteristics than lower strain rate deformations. Both porous AlSi10Mg and aluminum composites (AlSi10Mg -SiC) show similar behavior during compressive deformation process. These findings are necessary for understanding the potential of replication-cast AlSi10Mg-based porous structures as high-performance advanced energy materials for applications in impact protection, vibration damping, and energy-related structural systems.