As said the textures and shapes are great, but overall this picture is lacking substance. I am not sure how this could be all that was left. I would suggest backing up and getting a little more. Great idea though. With good composition of what you do have here.
<PicScout>
I agree with both of the above. I like looking at old metal things. Nice textures, focus and lighting. But yes, its gotta be attached to something. Leaves us wanting to see more.