Ferritic stainless steel sheet with excellent workability

A ferritic stainless steel sheet manufactured by cold-rolling performed at least twice with an intermediate annealing effected therebetween at a temperature in the range of 750° C. to 1000° C. having an average r-value of ≧2.2 and a ferrite crystal grain size number determined according to Japanese Industrial Standard (JIS) G 0552 of at least about 6.0, the ferritic stainless steel sheet comprising, by mass percent:

• not more than about 0.1% C, not more than about 1.0% Si, not more than about 1.5% Mn, not more than about 0.06% P, not more than about 0.03% S, about 11% to about 23% Cr, not more than about 2.0% Ni, about 0.5% to about 3.0% Mo, not more than about 1.0% Al, not more than about 0.04% N, at least one of not more than about 0.8% Nb and not more than about 1.0% Ti, and the balance being Fe and unavoidable impurities, satisfying relationship (1):
• 18≦Nb/(C+N)+2Ti/(C+N)≦60 (1)
• wherein C, N, Nb, and Ti in relationship (1) represent the C, N, Nb, and Ti contents by mass percent, respectively.

A ferritic stainless steel sheet manufactured by hot-finish-rolling the sheet at a rolling temperature of at least one pass of 650° C. to 900° C. by reduction ratio of 20-40%/pass and having an average r-value of ≧2.2 and a ferrite crystal grain size number determined according to Japanese Industrial Standard (JIS) G 0552 of at least about 6.0, the ferritic stainless steel sheet comprising, by mass percent:

• not more than about 0.1% C, not more than about 1.0% Si, not more than about 1.5% Mn, not more than about 0.06% P, not more than about 0.03% S, about 11% to about 23% Cr, not more than about 2.0% Ni, about 0.5% to about 3.0% Mo, not more than about 1.0% Al, not more than about 0.04% N, at least one of not more than about 0.8% Nb and not more than about 1.0% Ti, and the balance being Fe and unavoidable impurities, satisfying relationship (1):
• 18≦Nb/(C+N)+2Ti/(C+N)≦60 (1)
• wherein C, N, Nb, and Ti in relationship (1) represent the C, N, Nb, and Ti contents by mass percent, respectively.