This is a category of high quality PBR Metal textures. All textures are free for commercial use.
Grimy PBR Metal Material Physically based rendering, Metal, Material textures
30 Metal Smart Materials + PBR Textures + Free Video Tutorials - ZBrushCentral
Metal Perforated PBR Textures 016 – Free PBR Materials and PBR Textures
ArtStation - Rusty Iron Metal 3D texture PBR High Resolution Free Download 4k
Free Scifi PBR Materials Giveaway (3 Textures) - Work in Progress - Scifi PBR Media - Ultra Engine Community - Best game engine for VR optimized for fastest virtual reality performance
Metallic Magic: 90+ PBR Metal Textures for 3D Design
PBR-White-Metal-Cover - Good Textures
ArtStation - Galvanized Iron Metal 3D texture PBR High Resolution Free Download 4k
Golden Metal 05 PBR Texture by things
Metal Textures, Free PBR