I created a few sci-fi inspired ship hull materials in a collaboration with my buddy Jonas Ronnegard. In this post you can see some of my personal favorites rendered in Substance Designer using iray.

https://www.artstation.com/a/4214529

These 24 materials are available as a material pack at the JRO store and can be used directly in Substance Painter or Designer to quickly add interest to your environments or sci-fi structures.