Is Unreal Engine 4 got own material package?

Hello JCJChicken,

Welcome to the community and to the world of Unreal Engine.

Unreal Engine features a very powerful material editor. Material Editor helps you create advanced shaders including animations (via panners and rotators) that you can use in Geometry and Post-Process.

To read more about Material Editor, click here.
To read more about Material Editor UI, click here.
Post Process Material
Essential Material Concepts

Read more about Material Expression Types

Basic Material Example
Post Process Material Example