Lock on Door - Material Exercise!

I just love to do some simple modeling and then go nuts in the material section :D!
All material are procedural from scratch, so no image textures is in use here.
All is also made in Blender - both model and material.

Final Render

Final Render

The ref. image I found and looked at while doing the material.

The ref. image I found and looked at while doing the material.

Clay render

Clay render

Overview of the door material.

Overview of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.

Part of the door material.