Hi there! I've recently started using Blender 2.8 more and more for my hard-surface modeling purposes due to the existence of amazing add-ons for that software and it's renewed and fresh UI.
I wanted to share a personal pack of procedural materials that I use to previs my hard-surface designs when working in Blender.
MeshVoid procedural pack for Blender includes 39 materials and Mask Generator Node with 19 different output masks for you to stack and mix any base shaders you want on your model.
Materials are grouped and can be easily called into the node editor from the group tab.
Materials have changeable colour and other input values such as scale and detail of different normal and strength of bump details.
All materials were designed with PBR workflow in mind and all have respective Color, Roughness, Metallic, Normal output values, some materials support displacement too.
Full list of Materials:
Get it here: https://meshvoid.com/store
Get it on Gumroad: https://gum.co/ojMKd
P. S. I'll add some more links where you can buy it after the product being approved on respective platforms. Please watch workflow video before purchasing.