PREN Calculator PREN Calculator PREN Calculator PREN Calculator Cr% (Chromium content): Mo% (Molybdenum content): W% (Tungsten content): N% (Nitrogen content): Calculate PREN Click here to know what is PREN & Pitting Corrosion Related Posts:What is Pitting Corrosion?What is Austenitic Stainless SteelHastelloy C276 Alloy PropertiesStainless Steel Welding Electrodes GuideWhat Color is Tungsten? Get the Answer Here by Chart!Types of Tungsten Electrodes: Which One is Right For You?