abstract
armour
background
blank
brilliance
chrome
coarse
floor
frayed
grained
gray
grey
grooved
grunge
grungy
industrial
iron
material
matter
metal
metallic
military
monochrome
old
panel
pattern
plate
relief
ribbed
riffled
rough
rude
shabby
shining
shiny
silver
silvery
stained
steel
style
stylish
surface
texture
textured
threadbare
waste
weathered
wrinkled
wrinkles