Reflectance

Strength [0..100%]

This setting can be used to define the metal’s reflective strength. It’s recommended to always use higher values to ensure that the surface actually looks like metal.

Roughness [0..100%]

Increasing Roughness values from left to right.

This setting can be used to define the roughness of the metal surface. Smaller vlues will make the surface look more polished and larger values will produce a correspondingly more matte surface.