Lightweight materials with superior mechanical properties have been a focal point of research and industry attention, especially in sectors like shipbuilding and aerospace. Microlattice is a type of metamaterial designed with precisely arranged patterns of struts. Additive manufacturing offers a great chance to create these complex structures. This study presents an analysis of the specific design of the BCC-Z structures by adding 1 and 3 plates which are made by maraging steel 300. The primary emphasis lies in examining the mechanical behavior during quasi-static testing, incorporating both experimental analysis and modeling, alongside the microstructural evaluations. To enhance comprehension of the microstructure characterization, an exploration of grain orientation, node’s porosity, and microhardness has been conducted. The mechanical properties improve significantly by adding plates to the primary BCC-Z structures.