Zbrush metal surface Brushes

5 Brushes (+alphas), that you can use to quickly add surface detail on your metal objects inside of zbrush:

LK_metal_hammered

LK_metal_chipped

LK_metal_scratches

LK_metal_rust

LK_metal_dots

To get rid of the bump/change in Volume of object, go in the 'Alpha' menu -> 'Modify' ->

Either select 'Surface' or increase the 'Mid value' Amount.

Hope they are helpful! :)