FIELD: metallurgy.
SUBSTANCE: galvanized steel sheet has a specific weight from 5.5 to 7.5, and comprises a steel sheet and a zinc layer coated on its surface. The steel sheet has the following composition, wt %: from more than 0.100 to 0.500 C, from 0.0001 to less than 0.20 Si, from more than 0.20 to 3.00 Mn, 3.0-10.0 Al, 0.0030-0.0100 N, from more than 0.100 to 1.000 Ti, 0.00001-0.0200 P, 0.00001-0.0100 S, Fe and unavoidable impurities - the rest. Zinc layer has the following composition, wt %: 0.01-15 Fe, 0.05-1.0 Ni, 0.15-2.0 Al, Zn and unavoidable impurities - the rest.
EFFECT: produced sheets have a low specific weight, high galvanising properties and suitability for hole expansion.
8 cl, 1 dwg, 6 tbl, 4 ex
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