In terms of spread or ductility, FCC metals tend to have better spread properties than BCC metals. However, it's important to note that the actual ductility of a specific material depends not only on its crystal structure but also on factors such as its composition, temperature, and any impurities or defects present. Different metals and alloys within the same crystal structure may exhibit varying levels of ductility. Therefore, the choice between FCC and BCC materials for a particular application depends on the specific mechanical and functional requirements of that application.