This texture is FREE for commercial use.
It is a highly oxidised aluminium sheet having a lot of moss-like greenish substance on the metal surface.
The metal colour, intensity of polished marks, amount of scratches, amount of dents, oxidation level, dirt colour etc. can be managed via the Substance SBSAR file.
Check out this free PBR texture at
https://www.texturecan.com/details/476/