CAST CrMoV STEEL ALLOYS, AND METHOD OF PRODUCTION AND USE IN TURBINES THEREOF

摘要

PROBLEM TO BE SOLVED: To provide cast CrMoV steel alloys with heat resistance and high strength, and a method of producing articles from the same.SOLUTION: A cast alloy is generally provided, along with methods of producing the cast alloy and components produced from the cast alloy (e.g., stationary components of a turbine). The cast alloy can include, by weight, 0.12% to 0.20% carbon, 0.50% to 0.90% manganese, 0.25% to 0.60% silicon, 0.10% to 0.50% nickel, 1.15% to 1.50% chromium, 0.90% to 1.50% molybdenum, 0.70% to 0.80% vanadium, 0.0075% to 0.060% titanium, 0.008% to 0.012% boron, the balance iron, optionally low levels of other alloying constituents, and incidental impurities.