This is a set of Carbon Fiber materials I have been working on for a project. Substance Designer 5.3 was used to create the normals, masks, roughness, & albedo. The project is based on 4.11 which doesn't have a double normal. To achieve the look of carbon fiber I gave it an illusion of depth with the diffuse & roughness then layered it with a clear coat.
Each material has its own texture inputs and parameters for normals, clear coat, metallic, AO, scale, & roughness.
The worn carbon fiber uses vertex painting as a mask to expose the second material (which can be swapped into a metal or a non-metal). The mask input is a height map of the fibers to have the damage go in the direction of the strands.