Metallic properties in your 3D model may be missing in Substance Painter if the Metallic channel is disabled, relevant layers are hidden/locked, the texture set lacks metallic data, or UVs are incorrect.
- The Metallic parameter is often set to 0 (non-metallic) by default, so it won’t display. - Masked or locked Metallic layers hide their effect. - Poor UV unwrapping stops metallic textures from mapping properly.
To fix this, enable the Metallic channel in Material Properties, unhide/unlock Metallic layers, and ensure your texture set includes the Metallic map (Texture Set Settings > Channels). If UVs are wrong, re-export the model with properly unwrapped UVs.