abandoned
abstract
aged
alloy
backdrop
background
bright
brown
brushed
corrosion
corrosive
damaged
dark
design
detail
dirty
frame
grunge
grunge metal
hard
heavy
industrial
industry
iron
material
metal
metallic
old
oxidized
paint
pattern
plate
protection
rough
rust
rusted
rusty
scratch
sheet
shiny
solid
space
stain
steel
surface
texture
textured
wallpaper
weathered
worn