SKELP STEEL AND ITEM MADE OUT OF IT

FIELD: metallurgy. ^ SUBSTANCE: steel contains carbon, silicon, manganese, nickel, chromium, copper, sulphur, phosphorus, aluminium, nitrogen and one or more elements from group: titanium, molybdenum, niobium, vanadium, boron, calcium and unavoidable impurities at following ratio, wt %: carbon 0.02 - 0.12, silicon 0.05 - 0.60, manganese 1.1 - 2.2, nickel 0.05 - 1.2, chromium 0.005 - 0.50, copper 0.005 - 0.50, sulphur as high, as 0.012, phosphorus as high, as 0.018, aluminium 0.01 - 0.08, nitrogen as high, as 0.010, one or more elements of group: titanium 0.001 - 0.04, molybdenum 0.001 - 0.6, niobium 0.001 - 0.12, vanadium 0.001 - 0.12, boron 0.0001 -0.004, calcium 0.0001 - 0.006, iron and unavoidable impurities the rest. Additionally, steel can contain 0.0001 - 0.005 wt % of REE (rare earth elements). At 480ëñâYëñ635 summary contents of manganese and nickel is [Mn]+[Ni]ëÑ0.0025*âT+0.1622 and steel has Ceëñ0.43, Pfsëñ0.23, 5ëÑ19. At 635ëñât