As regards utensils made up of SS 202 since we clean them regularly say daily/ weekly basis the chromimum oxide layer (part of SS metallurgy) gets renewed and hence do not rust.
But if we leave them un attended for long period of time say 1 year plus , pitting marks shall start developing on the top surface .Generally these pitting marks can be removed by repolishing if they are not deep.
For more details you can call me at 9871588622

Rolling. Stamping. Deep drawing. Cutting and Welding.

Stainless steels have a number of quirks that make them tricky to work with if you don’t select the right alloy. For example, most 100, 200, and 300 series alloys are extremely difficult to machine, due to their rapid work-hardening rate. This also causes (some) problems for stamping and forming operations, since these alloys become progressively more difficult to work, the more they are deformed.

There are a number of 300 series austenitic alloys that are specifically formulated for forming and drawing operations, for example type 301,

Ferritic 400 series alloys are generally easier to machine, but they posses less ductility and are less suited for stamping or drawing operations that require large area-reduction ratios.

Stainless steels also pose problems for welding. Namely “weld decay” type corrosion which is discussed here:
http://www.corrosionclinic.com/types_of_corrosion/weld_decay_weldment_corrosion.htm