FIELD: ferrous metallurgy. SUBSTANCE: invention relates to steels used as long-measured tool used in hot rolling. Invention proposes steel comprising the following components, wt. -%: carbon, 0.32-0.36; manganese, 0.30-0.50; silicon, 0.90-1.10; chrome, 5.15-5.50; molybdenum, 1.20-1.35; vanadium, 0.90-1.10; nitrogen, 0.005-0.015; niobium, 0.0005-0.05; calcium, 0.005-0.025; zirconium, 0.005-0.025; aluminum, 0.01-0.035; iron, the balance. EFFECT: enhanced hardness and hardenability in air of steel. 2 tbl
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