Awesome Materials Pack
Contains 12 procedural materials that can be used in Cycles or Eevee.
Damaged Metal

Rough Steel

Gold

Silver

Dirty Raw Metal

Rusty Old Metal

Sci-Fi metal

Hammered Steel

Galvanized Steel

Concrete

Painted Wall

Organic

How it works
Each material is extremely easy to use and customizable. With different settings, you can get a lot of variations of each material.
Just append material to your scene, assign it to mesh and move sliders until you get needed result!

It may work fine without UV in some cases, but using UV is recommended.
The .pdf guide included.