STEEL Russian patent published in 1996 - IPC

FIELD: ferrous metallurgy; particularly, steel composition used for production of high-strength reinforcement of die-rolled section and also for production of prestressing ferroconcrete structures. SUBSTANCE: steel contains the following components, %: carbon, 0.28-0.37; manganese, 0.7-1.3; silicon, 0.5-1; aluminium, 0.005-0.05; germanium, 0.005-0.002; vanadium, 0.005-0.05; barium, 0.001-0.02; iron, the balance, at the condition than ratio of vanadium to germanium equals to 10:25. EFFECT: higher strength and impact elasticity at subzero temperatures. 1 tbl