STEEL Russian patent published in 2004 - IPC

FIELD: ferrous metallurgy; low-alloyed weldable steels used in mechanical engineering and construction engineering and manufacture of pipes. SUBSTANCE: proposed steel contains carbon, manganese, silicon, vanadium, aluminum, copper, calcium, nickel, barium and iron at the following relationship of components, weight-%: carbon, 0.06-0.10; manganese,1.3-1.4; silicon, 0.20-0.30; vanadium, 0.05-0.12; aluminum, 0.03-0.05; copper, 0.90-1.00; calcium, 0.005-0.010; nickel, 0.9-1.00; barium, 0.005-0.010; the remainder being iron. EFFECT: enhanced mechanical properties, corrosion resistance in active media and avoidance of blistering. 2 tbl, 1 ex