aged
alloy
aluminum
background
blank
brushed
dust
grunge
hard
heavy
highlight
industrial
iron
lights
lines
material
metal
metallic
modern
plate
polished
reflective
rough
rust
sheet
shine
shiny
silver
silvery
sleek
smooth
space
stainless
steel
strong
style
surface
template
texture
textured
tile
titanium
tough
wallpaper