Patent ID: 6458221
Filing Date: 2002-10-01
Classification: C21D,C22C

Abstract:
A ferritic stainless steel sheet having excellent formability, comprising, by mass %:C: 0.02 to 0.06%; Si: 1.0% or less; Mn: 1.0% or less; P: 0.05% or less; S: 0.01% or less; Al: 0.005% or less; Ti: 0.005% or less; Cr: 11 to 30%; Ni: 0.7% or less; and the balance composed of Fe, and N and V as inevitable impurities, wherein N is contained to satisfy the relation to the C content represented by the following equations (1) and (2), and V is contained to satisfy the relation to the N content represented by the following equation (3):0.06&lE;(C+N)&lE;0.12â€ƒâ€ƒ(1) 1&lE;N/Câ€ƒâ€ƒ(2) 1.5Ã—10âˆ’3&lE;(VÃ—N)&lE;1.5Ã—10âˆ’2â€ƒâ€ƒ(3) Wherein C, N and V equal the contents (mass %) of the elements; wherein said sheet is made by continuous casting, reheating at 1050 to 1250Â° C., hot rolling with finish delivery temperature at 800 to 900Â° C. and cold rolling with 50-95% reduction.