Austenitic stainless steel anti- corrosion ability

This uniform corrosion can be removed by mechanical polishing . Comparative steel is an austenitic 304 stainless steel sheet popular because of its anti- corrosion ability ( due to stress corrosion cracking , but exceptions ) . As time migration , austenitic stainless steel will be black . If, for aesthetic reasons or otherwise , which blackening can be removed by grinding . Stainless steel in seawater rarely produce uniform rust candle , so in actual use may not have to worry.
Pusher tug propulsion boats on the ocean and on the other by cast stainless steel plate 304 CF-8 ( quite dry type 304 stainless steel) . When not sailing vessels , from the hull to the propeller shaft bearings by forming a conductive metal loop. Type 410 stainless steel components for the equivalent of casting propellers are often draped selection , and has been widely used in other areas such as icebreakers and so on.