COLD-RESISTANT STEEL FOR LOAD-BEARING ELEMENTS OF METAL-CONCRETE CONTAINERS OF NUCLEAR-POWER ENGINEERING

摘要

FIELD: iron and steel industry; production of structural steels for nuclear-power engineering. ^ SUBSTANCE: the invention is pertaining to the field of production of structural steels for nuclear-power engineering used at production of container equipment for storing and transportation of the waste nuclear fuel and the radioactive waste. The offered cold-resistant steel for load-bearing elements of the metal-concrete containers contains (in mass %): carbon - 0.03-0.10; silicon - 0.3-0.7; manganese - 1.0-1.7; chromium - 0.1-0.25; nickel - 0.1-0.25; copper - 0.1-025; molybdenum - 0.05-0.2; titanium - 0.01-0.1; nitrogen - 0.01-0.05; cerium - 0.01-0.08; sulfur - 0.005-0.015; phosphorus - 0.005-0.015; iron - the rest At that. Thus the total share of carbon and nitrogen does not exceed 0.12 mass %, and sulfur and phosphorus - no more than 0.020 mass %. The technical result is an increased operational reliability and environmental safety of the container assemblies at transportation and a prolonged storage up to 100 years of the waste nuclear materials and the radioactive waste. ^ EFFECT: the invention ensures an increased operational reliability and environmental safety of the container assemblies at transportation and a prolonged storage up to 100 years of the waste nuclear materials and the radioactive waste. ^ 2 tbl