Its not a case of just adding reflection blur. Its no use giving an advanced tip when its clear the basics arent there.

You have to ask the question - 'what type of metal am I trying to achieve?'

As at the moment its just a shader with full reflectivity causing the whole object to basically look like chrome. Have a look around google at different metals. Some metals like aluminium dont reflect at all they just have a very matted specular spread. By adding a good texture to the object as well will help sell it as being metal, not just by giving it a shader.

Jay