Q: Is there a way to actually measure the corrosion resistance of Duplex stainless steel bolts? I’m trying to better understand their resistance compared to the 316 I’m currently using.
A: Yes there is an actual calculation you can use called PREN. PREN takes into account the elemental makeup of an alloy in order to provide a measurable value of how each stainless steel alloy compares in preventing pitting corrosion. You can learn more about PREN means and how to use this calculation by visiting our knowledge page: PREN Corrosion Calculation.