The UNS S32750 combines the most desirable and unique characteristics of austenitic steel and iron. It contains 24 to 26 % of Copper, approx. 0.5% of Carbon, 3 to 5 % of Molybdenum, 1.20 % of Manganese, 0.25% of Nitrogen, approx 7% of Nickel, 0.035% of Phosphorus, 0.020 to 0.5% of Sulfur, 0.40 % of Silicon.Web