FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, namely to marine steel resistant to corrosion in sea water. Steel consists of the following chemical components in wt.%: C 0.011-0.069, Si 0.11-0.29, Cr 1.51-1.99, Nb 0.02-0.05, Zr 0.01-0.02, RE 0.0034-0.02, the rest is Fe and unavoidable impurities. Content of Zr and RE satisfy the expression Zr/RE = 1-3. Steel contains lanthanum and cerium as RE element, weight fraction of lanthanum and cerium is (70-90):(10-30).
EFFECT: steel has required corrosion resistance in sea water at reduced cost.
10 cl, 8 dwg, 2 tbl, 3 ex
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