abandoned abstract aged alloy aluminum armor armoring armour backdrop background backgrounds black break brown brush closeup concept copyspace corrosion crack cut damage decoration design dirty edge empty fracture frame futuristic grunge grungy hard heavy industrial industry iron ironworks layered macro material metal metallic multi old panel pattern plate red rend retro rough rupture rust rustic rusty sheet shell shiny silver space split stain stainless steel style surface template texture textured torn vintage wall worn