Metal foam comprises of a cellular structure containing gas-filled pockets that are separated by interconnected metal walls. Its unique composition provides it with excellent physical and mechanical properties, including high thermal insulation, high energy absorption, and lightweight construction. Synonyms for Metal foam include metal sponge, porous metal, metallic honeycomb, and cellular metal. The application of metal foam cuts across several industrial sectors including aerospace, automotive, building, and construction, and medical devices. Research has shown that metal foam is a promising material for customized implant design and bone repair, as well as for energy absorption applications such as impact protection, crashworthiness, and blast mitigation.