Stainless steel is generally highly resistant to attack from acids, but this quality depends on the kind and concentration of the acid, the surrounding temperature, and the type of steel. Type 904 is resistant to sulfuri acid  at room temperature, even in high concentrations; types 316 and 317 are resistant below 10%; and type 304 should not be used in the presence of sulfuric acid at any concentration. All types of stainless steel resist attack from phosphoric acid, types 316 and 317 more so than 304; types 304L and 430 have been successfully used with nitric acid.Nitric acid . Hydrochloric acid will damage any kind of stainless steel, and should be avoided.