Carbon-0.82 Chromium-0.60 Manganese-0.42 Phosphorus-0.04 Silicon-0.22 Sulfur-0.05 Vanadium-0.20 This is an oil hardening steel. It has very good toughness and holds a good edge. The Chromium and Vanadium makes a soak at a controlled temp. necessary to get the most from this steel. Here is the reccomended heat treat process; 1. Heat to 1545-1615 and soak for 5 minutes. 2. Oil quench. 3. Temper twice for 2 hours each time. Temper between 300 & 500 depending on application. I would be very interested in hearing from people who have actually used this steel. I would like to hear testing results, thoughts on hardening temps. & times, & reccomendations for Normalizing & thermal cycling.