The most common metals used for stamping include steel, stainless steel, aluminum, copper, nickel, and brass. The reflective surface, durability, and strength of these metals make them a great choice for many lighting applications. However, certain specialized applications may require rare features that can only be found in exotic materials such as Inconel, Kovar, or titanium. The best metal material for a given lighting project will ultimately depend on the functional or aesthetic goals of the space as well as the type of environment it will need to withstand.