Sheet metal parts are commonly made using aluminum, steel, stainless steel, brass, bronze, and copper. The pre-treated sheet can be sourced, including galvanized metal.
You can find all of the standard thicknesses for materials we carry on our Standard Sheet Sizes resource page.
Metal blanking is recommended to be below 4' x 10'. Foils, as in parts between 0.002" to 0.012" thickness, require a manual review from a Xometry team member.