Does nitric acid in exhaust gases cause corrosion to 316L at room temperature and around 120 degrees Celsius?
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Does nitric acid in exhaust gases cause corrosion to 316L at room temperature and around 120 degrees Celsius?
Nitric acid in exhaust gases can cause corrosion of 316L stainless steel, whether at room temperature or at high temperatures around 120 degrees. 316L has better corrosion resistance than many other types of stainless steel, but it can still corrode in the presence of strongly oxidizing acids such as nitric acid. An increase in temperature usually accelerates the rate of chemical reactions; therefore, the corrosion rate may be faster at high temperatures. .
Stainless steel is not resistant to the corrosion of hot concentrated nitric acid. It can be used at room temperature.
304 is resistant to nitric acid, while 316L is resistant to dilute sulfuric acid; it’s hard to say what will happen if there are other impurities in the exhaust gas.
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