FIELD: metallurgy. SUBSTANCE: steel has, wt. -% : carbon 1.4-1.6; silicon 0.5-0.8; manganese 3-4; chrome 4.5-5.5; nickel 0.8-1.4; molybdenum 0.7-0.9; boron 0.11-0.2; nitrogen 0.06-0.09; cerium 0.12-0.2, and iron - the rest. Steel is used in machine engineering. EFFECT: enhanced quality of steel. 1 tbl
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