These are 2 images of spaceship Enterprise from the original series Star Trek.
I made this .obj model with blender 4 years ago,my first model.
Now i’ve use a mix of opaque plastic material and metal material (aluminium) to give metallic reflections to the surfaces.
Material made by me with fresnel equations.
The rgb channels of the texture are plugged into the diffuse coefficients to give the scattering
The mix of materials: