Thanks for the reply Rookie, I did what you suggested but both Polished and Brushed still look the same. I also have a couple of shapes rendered in a room, both polished and brushed black metal and aluminum as well as other metals.
The aluminum brushed is more matt than the aluminum polished, I would expect the same for the black metal.
I would not think that one would be able to adjust a Core Catalog setting. Wondering if there is a way to reset the material defaults.
Thanks