As of Alpha 10.4 build 10, Metal Reinforced Cobblestone Ramp is no longer available via the Creative Menu.
Metal Reinforced Cobblestone Ramp was a the upgraded version of a Reinforced Cobblestone Ramp. It can not be crafted using other materials, the only ways to obtain a Metal Reinforced Cobblestone Ramp are through upgrading a Reinforced Cobblestone Ramp or using the Creative Menu. It was not possible to dismantle, scrap or use a Metal Reinforced Cobblestone Ramp as fuel. You can not destroy a Metal Reinforced Cobblestone Ramp, as such because it will simply downgrade at what would be its point of destruction.
Upgrading[ | ]
A Metal Reinforced Cobblestone Ramp was the final result of the upgrade process and no further improvements can be made.