abstract
aluminum
backdrop
background
brush
brushed
chrome
copper
damaged
decay
design
dirt
dirty
distress
dot
factory
gray
grunge
grungy
hard
industrial
industry
iron
material
metal
metallic
military
old
pattern
plate
rough
rust
rustic
rusty
scratch
scratched
sheet
shiny
silver
steel
surface
texture
textured
vertical
vintage
wall
wallpaper
weathered
worn