If they are light surface scratches, you might want to try Flitz polish. It is similar to Brasso, or Novus, but is a bit more porous and formulated for metal use.
It works really well at getting out surface scratches and giving a high-lustre polish.
Sometimes it works too well. If you use it too much, it may fade logos on blades, or will overpolish bead-blast finishes.