We are planning to use SS 304 as replacement for mild steel against atmospheric corrosion and for longevity (about 20 years). Moreover we are also planning for hot dip galvanizing on mild steel. Kindly recommend to us which is best.
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Brian Dalder Forum Moderator 177 Posts
Re: Which steel is best to guard against corrosion?2 August 2012 at 3:19pmAtmospheric corrosion is a complex subject and, according to Fontana, accounts for more failures on a cost and tonnage basis than any other single environment. The degree of corrosion depends on the type of corrosive atmosphere (rural, marine, or industrial), temperature, and degree of moisture in the form of rain, dew, condensation or high humidity. Both galvanized steel and 304 stainless steel have been used successfully to protect against atmospheric corrosion. 304 stainless steel is generally more corrosion resistant than galvanized steel but it is also more costly. Selection of MOCs that will give satisfactory performance and longevity can only be done after detailed information regarding the specific environment (e.g. which pollutants are present) is compiled and analyzed.