STEEL Russian patent published in 1994 - IPC

FIELD: metallurgy. SUBSTANCE: steel has, wt. -% : carbon 0.35-0.45; silicon 0.17-0.37; manganese 0.5-1.0; chrome 5-6; titanium 0.11-0.15; niobium 0.2-0.3; copper 0.2-0.3; cerium 0.15-0.2; tantalum 0.8-1.1; aluminium 0.01- 0.03; hafnium 3.8-4.8; rhenium 0.7-1.0; nitrogen 0.1-0.15, and iron - the rest. Steel is used in machine engineering. Hardness of steel proposed at 600 C is 52-55 HRC, and bearing strength is 0.07-0.1 mm. EFFECT: enhanced quality of steel. 1 tbl