Virtually any conductive metal can be (and has been) used as shielding.
Materials in common use today in the electronics industry are metals like Tin plate, block Aluminium, sheet steel and galvanised steel.... Equally valid options are things like Gold leaf (think of the Apollo lunar landers), Lead sheet and cast Iron...
Hopefully you all can see a theme here in regards to shielding ... Aluminium or Copper, both work equally as well...