| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cold rolled ferritic stainless steel sheet excellent in corrosion resistance and formability. SOLUTION: A steel stock, which has a composition containing, by weight, 10-20% Cr, 0.005-0.03% N, and <=0.01% Al and further containing <=0.2%, in total, of one or >=2 kinds selected from 0.02-0.1% Nb, 0.02-0.1% Ti, 0.02-0.1% V and 0.01-0.1% Zr is subjected, in succession, to hot rolling, to hot rolled plate annealing, and to cold rolling so as to be formed into a cold rolled sheet. This sheet is annealed at 750 to 1000 deg.C annealing temperature and then cooled from this annealing temperature at >=20 deg.C/s cooling rate, by which low temperature transformation forming phases having <=1μm diameter upon apploximation to sphere are dispersed by (1.0×10<3> to 1.0×10<6> ) pieces/mm<3> .</p> |
