Selection 304 303 316 Types Stainless Steel for Seawater Application By yaang.com

316 types stainless steel are used widely in marine application, but their corrosion resistance in contact with seawater is limited and they cannot be considered 'corrosion proof' under all situations. They are susceptible to localized attack mechanisms, principally crevice and pitting corrosion. This limits the scope for the use of these steels in seawater contact.

Selection of stainless steel for handling acetic acid CH3COOH By yaang.com

Acetic acid is a weak reducing acid. It is used in plastics manufacture and is a constituent of foods as vinegar. Ferritic stainless steels such as 430 type can be considered but normally the 304 types are used for most applications, including handling and storage. 
Acetic anhydride (CH3CO)2O can be aggressive to either 304 or 316 types in the absence of any water and in the presence of chlorides. Peracetic acid CH3C(O)OOH (peroxyacetic acid) should be safe with stainless steel.Vinyl acetate C4H6O2 may be considered with the 316 grades for ambient temperature storage applications.