16Mo3 is a type of steel alloy that is commonly used in Europe, particularly in the manufacture of pressure vessels, boilers, and pipes. Here's a breakdown of the designation: - 16: Indicates the carbon content of the steel (0.16% carbon) - Mo: Stands for Molybdenum, which is a key alloying element in this steel - 3: Indicates the molybdenum content (0.3% molybdenum) 16Mo3 is a chrome-molybdenum steel with a composition of: - Carbon: 0.12-0.20% - Molybdenum: 0.25-0.35% - Chromium: 0.25-0.35% - Manganese: 0.40-0.70% - Silicon: 0.15-0.30% - Nickel: 0.20-0.30% - Phosphorus: 0.025% max - Sulfur: 0.015% max This steel alloy offers excellent: - High-temperature resistance - Corrosion resistance - Weldability - Formability Common applications for 16Mo3 include: - Pressure vessels - Boilers - Heat exchangers - Piping systems - Power generation equipment - Petrochemical equipment Note that 16Mo3 is equivalent to other steel grades, such as: - ASTM A204 Grade B - DIN 17155 15Mo3 - EN 10028-2 16Mo3 However, exact equivalents may vary depending on specific requirements and standards.