FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, namely to low-carbon under-peritectic steels used for production of seamless pipes of main oil and gas pipelines from continuously cast billets. Steel contains, wt%: carbon to less than 0.04, manganese 0.90-1.65, vanadium 0.03-0.08, aluminium 0.005-0.060, nitrogen 0.005-0.015, iron and unavoidable impurities making the rest.
EFFECT: providing the required level of strength properties.
1 cl, 1 dwg
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