FIELD: metallurgy.
SUBSTANCE: element is made of steel containing in wt %: carbon - 0.17-0.25, nickel - 0.25, molybdenum - 0.15-0.60, niobium - 0.01-0.08, and/or titanium - 0.005-0.1, and/o vanadium - ≤ 0.16, aluminium - 0.050, chromium - 0.01-0.50, silicon - 0.1-0.3, manganese - 1.40-1.60, phosphorus - less than 0.015, sulphur - less than 0.015, copper - less than 0.20, nitrogen - 0.006-0.014, iron and unavoidable impurities making the rest.
EFFECT: preset complex of mechanical properties.
28 cl, 8 dwg, 2 tbl
