LOW ALLOY STEEL FOR PRESSURE BOUNDARY PIPING OF NUCLEAR POWER PLANT AND METHOD FOR MANUFCTURING LOW ALLOY STEEL FOR PRESSURE BOUNDARY PIPING OF NUCLEAR POWER PLANT

摘要

Low-alloy steel for pressure boundary piping of nuclear power plants is weight percent, carbon (C): 0.095% ~ 0.153%, manganese (Mn): 1.15% ~ 1.28%, silicon (Si): 0.229% ~ 0.244%, nickel (Ni ): 0.34% ~ 0.392%, chromium (Cr): 0.22% ~ 0.252%, copper (Cu): 0.03% ~ 0.126%, aluminum (Al): 0.005% ~ 0.019%, molybdenum (Mo): 0.06% ~ 0.107 %, vanadium (V): contains 0.039% to 0.052%, and the balance contains iron (Fe) and other inevitable impurities.