Patent ID: 6413332
Filing Date: 2002-07-02
Classification: C21D,C22C

Abstract:
A method of producing a ferritic Cr-containing steel sheet having excellent ductility, formability, and anti-ridging property, the method comprising hot-rolling a steel raw material comprising, by mass %, about 0.001 to 0.12% of C, about 0.001 to 0.12% of N, about 0.0002 to 0.0030% of B, and about 9 to 32% of Cr to form a hot-rolled sheet, annealing the hot-rolled sheet, cold-rolling the hot-rolled sheet passed through the hot-rolled sheet annealing step, and finish annealing the cold-rolled sheet, wherein a pre-rolling step is performed comprising cold or warm rolling said sheet with a rolling reduction of about 2 to 15% between the hot-rolling step and the hot-rolled sheet annealing step.