The corrosion resistance of stainless steels usually depends on the carbon content as well as on the proportions of chrome, molybdenum and nickel contained in alloys.
Stainless steel shafts that are suitable for the use of ball bearings or rolling bearings must have hardened surfaces in order to ensure that the balls do not create grooves. These types of steel (e.g. 1.4034, 1.4112, 1.4125) have a comparatively high C content (over 0.5%) in order to be hardenable. They are only corrosion-resistant to a very limited extent.