Hey @Gatis,
You done awesome creating this brushed metal. Top job.
I agree with the scale being to large. I would also add that the surface scratches, anything that is diagonal, be reduced quite a bit in the amount of surface area it covers.
Brushed metal tends to be in one direction, (usually horizontal or vertical, sometimes in a circular pattern). Scratches can be any which way, but do tend to be only here and there.
Overall though I think it looks good, It is not easy creating good materials with shader nodes, it takes quite a bit of knowledge and skill.
