abstract
alloy
aluminium
aluminum
background
blank
brushed
design
dirty
durable
gray
grunge
grungy
hard
heavy
highlight
industrial
industry
iron
lines
material
metal
metallic
modern
new
old
panel
pattern
plate
reflection
sheet
shiny
silver
silvery
sleek
space
square
stainless
steel
strong
style
surface
template
texture
textured
tile
titanium
tough
wall
wallpaper