This highly oxidized metal plate is full of round cap nails, but well aligned. It is usually used as covers for containers.
Dirt has accumulated around round caps as those are good places to hide debris.
Oxidation has different degrees too. It can be proved by different reflectivity.
Of course, scratches cannot be omitted for oxidized iron metals.
This is a seamless and tileable PBR CG texture for 3D artists.
Each package usually includes a Base Color Map / Diffuse Map, Normal Map, Roughness Map, Displacement Map, Metallic Map (Metals Only) and Ambient Occlusion Map.
It is FREE for personal and commercial use!
It can be downloaded at
https://www.texturecan.com/details/74/