Instruction:

For use material or shader you should use Append form file. Follow path:

1. In your scene File -> Append (shift+F1) -> Select “Steel_SGR_shader.blend”->
   1. Material -> “Steel_SGR” to load already setup material;
   2. NodeTree - to add only steel node, if you want add it in your material. After that you can add node: Node Editor -> Add -> Group -> “Steel_SGR_shader”;
2. Texture Coordinate (Object) shader in mapping sockets;
3. Connect outputs to appropriate Material output sockets.

To conrtoll of Global scaling of material, use node Mapping (Add -> Vector -> Mapping)