abstract
alloy
aluminium
backdrop
background
brushed
central
dark
decorative
dirty
durability
durable
hard
heavy
high
highlight
industrial
industry
iron
lines
material
metal
metallic
obsolete
old
pattern
plate
retro
rust
scratched
sheet
shining
shiny
silver
sleek
space
stain
steel
strong
surface
texture
textured
titanium
vintage