Galvannealed steel sheet and method for producing same

Details Galvannealed steel sheet and method for producing same Galvannealed steel sheet and method for producing same

C - Chemistry, Metallurgy

22

C

C22C 38/06 (2006.01) C21D 9/46 (2006.01) C22C 38/04 (2006.01) C23C 2/02 (2006.01) C23C 2/28 (2006.01) C22C 38/12 (2006.01) C22C 38/18 (2006.01)

Patent

CA 2601497

Disclosed is an alloyed hot-dip galvanized steel sheet having a chemical composition consisting of, in mass%, 0.05-0.25 % of C, not more than 2.0% of Si, 1-3% of Mn, not more than 0.1% of P, not more than 0.01% of S, 0.3-2% of Al, less than 0.005% of N, not more than 1% of Cr, not more than 1% of V, not more than 1% of Mo, less than 0.005% of Ti, less than 0.005% of Nb and the balance of Fe and unavoidable impurities, while satisfying Si + Al >= 0.6 % and Cr + V + Mo = 0.1-2%.

L~invention décrit une feuille d~acier allié galvanisé par immersion à chaud ayant une composition chimique consistant en pourcentage en masse de 0,05 à 0,25 % de C, pas plus de 2,0 % de Si, de 1 à 3 % de Mn, pas plus de 0,1 % de P, pas plus de 0,01 % de S, de 0,3 à 2 % d~Al, moins de 0,005 % de N ; pas plus de 1 % de Cr, pas plus de 1 % de V, pas plus de 1 % de Mo, moins de 0,005 % de Ti, moins de 0,005 % de Nb et le complément de Fe et impuretés inévitables, tout en satisfaisant Si + Al >= 0,6 % et Cr + V + Mo = 0,1 à 2 %.

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