| 摘要 |
PROBLEM TO BE SOLVED: To provide a square vessel which has no cracks in a wall part formed by deep drawing and has a satisfactory shape. SOLUTION: A ferritic stainless steel sheet consisting of, by mass,≤0.10% C,≤2.0% Si,≤2.0% Mn,≤0.050% P,≤0.020% S, 11.0 to 35.0% Cr,≤0.05% N, 0.05 to 0.5% Ti, and 0.10 to 0.50% Nb, and in which the minimum value of Lankford values measured along all the directions in the face r<SB>min</SB>is≥1.4, and the average deviationΔr* defined byΔr*=(¾r<SB>L</SB>-r<SB>D</SB>¾+¾r<SB>T</SB>-r<SB>D</SB>¾)/2 (wherein, r<SB>L</SB>, r<SB>T</SB>, and r<SB>D</SB>are Lankford values measured along the rolling direction, in the direction orthogonal to the rolling direction, and in the direction tilted by 45 degrees to the rolling direction, respectively) is≤0.8 is used as the stock, and is formed so as to be a square shape by deep drawing. COPYRIGHT: (C)2004,JPO
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