abstract
aged
aluminum
background
brown
closeup
dark
dirty
distressed
durable
grunge
grungy
heavy
industrial
industry
iron
material
metal
metallic
old
oxidated
oxidized
pattern
patterned
peeled
plate
rough
rust
rustic
rusty
scratches
shabby
sheet
silver
stain
steel
surface
texture
textured
tin
vintage
weathered
worn