STEEL Russian patent published in 1994 - IPC

FIELD: metallurgy. SUBSTANCE: steel has, wt. -% : carbon 0.35-0.45; manganese 0.4-0.8; silicon 0.4-0.5; chrome 2-3; nickel 1.75-2.25; molybdenum 0.15-0.25; calcium 0.05-0.1; magnesium 0.08-0.1; rare-earth metals 0.08-0.1; titanium 0.15-0.25; vanadium 0.5-0.9; boron 0.05-0.15; zirconium 0.5-1.0, and iron - the rest. Steel is used in machine engineering. EFFECT: enhanced quality of steel. 1 tbl