Rusty Tread Plate created in Substance Designer.
Rendered in Marmoset Toolbag 4.
Inspired by an image I saw on Shutterstock.
Usually I use a lot of custom nodes in my work, especially for Albedo, but this time I kept it to standard nodes only so I could give this one away for free 
Grab it here: https://www.artstation.com/marketplace/p/pkV7L/rusty-tread-plate-substance-designer-free-sbs?utm_source=artstation&utm_medium=referral&utm_campaign=homepage&utm_term=marketplace