Method of making cold-rolled high strength steel sheet

Details Method of making cold-rolled high strength steel sheet Method of making cold-rolled high strength steel sheet

1975-12-30

1977-11-15

Stallard, W.

Metal treatment

Compositions

Heat treating

75123J, 75123L, 75123M, 75123N, C21D 702, C21D 714, C21D 946

Patent

active

040584143

ABSTRACT:
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 3mm or less while possessing a high tensile strength of 50 to 100 kg/mm.sup.2, and is extremely suitable for use as a constructional material of car bodies.

REFERENCES:
patent: 3830669 (1974-08-01), Matsuoka et al.
patent: 3902927 (1975-09-01), Pernstal
patent: 3936324 (1976-02-01), Uchida et al.

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