alloy
art
background
bar
board
border
brand
chrome
design
dirty
frame
grunge
heavy
industrial
industry
iron
ironworks
junk
layout
light
material
metal
metallic
old
paint
painted
panel
pattern
plate
plug
rust
rusty
scratched
screw
sheet
silver
soviet
space
stain
stainless
texture
union
ussr
wall
weathered
yellow
yinsteel