The 3Delight Substance materials renders Substance Designer materials following the Metal-Roughness workflow with specular level control. This workflow is explained in great deails in the following reference:
https://academy.allegorithmic.com/courses/05171e19aa8dc19421385fd9bb9e016e
Note that the material is not meant to be modified by hand as all input, except Edge Tint, is meant to be plugged into Substance Designer textures.
The Edge Tint parameter is a complement that allows for more realistic metal effects. The parameter is the same as in 3Delight Metal material.
To be continued ...
The Substance materials allows easy look development using Substance Designer textures.