The phrase "rusted metal" refers to metal that has become a reddish-brown color and rough due to exposure to moisture and oxygen over time. Full definition
Untitled Relief (1962) is an early example of this departure in stature and form, a complex tangle of rusted metal scraps exploding from a canvas of stapled brown paper. (lamodern.com)
Though mostly covered in rusted metal, the table suggests the possibility of constructing something new. (artasiapacific.com)
From rusted metal gratings to abandoned streets and everything in - between, Silent Hill: Revelation presents our Special Place in a way that's familiar, yet new and exciting to explore. (mysilenthill.com)