FIELD: metallurgy.
SUBSTANCE: invention relates to steels used in automobile manufacture. Invention proposes steel comprising carbon, silicon, manganese, chrome, sulfur, phosphorus, nickel, copper and iron taken in the following ratio, wt.-%: carbon (C), 0.02-0.05; silicon (Si), below 0.02; manganese (Mn), 0.15-0.19; phosphorus (P), below 0.015; sulfur (S), below 0.02; chrome (Cr), below 0.03; nickel (Ni), below 0.06; copper (Cu), below 0.06, and iron (Fe), the balance. Microstructure of steel in ready form comprises structural-free cementite of the second score, not above, and steel corresponds to rather profound and complex class of stretch. Invention provides enhancing consumers' properties of cold-rolled low-carbon thin-sheet steel based on its improved stamping capacity.
EFFECT: improved and valuable properties of steel.
1 ex
| Title | Year | Author | Number |
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