Cold-rolled high strength steel sheet

Details Cold-rolled high strength steel sheet Cold-rolled high strength steel sheet

C - Chemistry, Metallurgy

21

D

75/147, 148/34.4

C21D 8/00 (2006.01)

Patent

CA 1069806

ABSTRACT OF THE DISCLOSURE Disclosed are a cold-rolled high strength steel sheet having excellent cold workability under the as- annealed condition which consists essentially of, by weight, 0.03 - 0.2% C, 0.6 - 1.5% Si, 1.3 - 3.0% Mn, 0.01 - 0.25% Nb or 0.01 - 0.2% Ti or 0.01 - 0.3% Nb plus Ti, and the remainder of Fe with inevitable amounts of impurities, and the method of making the same. The steel sheet can be as thin as 3 mm or less while possessing a high tensile strength of 50 to 100 kg/mm2, and is extremely suitable for use as a constructional material of car bodies.

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