STEEL Russian patent published in 1998 - IPC

FIELD: metallurgy, in particular, sparingly alloyed steel used in casting of large-size shafts of high-speed paper-making machines. SUBSTANCE: steel contains, wt. -%: carbon, 0.18-0.20; silicon, 0.10-0.50; manganese, 1.20-1.60; chromium, 0.8-1.8; nickel, 0.20-0.60; copper, 0.40-0.80; molybdenum, 0.15-0.30; boron, 0.001-0.003; aluminum, 0.005-0.05; titanium, 0.001-0.02; calcium, 0.005-0.06; zirconium, 0.005-0.10; vanadium, 0.04-0.15; niobium, 0.04-0.15; cerium, 0.005-0.06; iron, the balance. EFFECT: higher hot crack resistance and hardenability. 1 dwg, 3 tbl