| 摘要 |
PURPOSE:To inexpensively mass-produce a polished ferritic stainless steel sheet having attractive metallic luster and excellent in oxidation resistance. CONSTITUTION:The polished steel sheet can be produced by subjecting a ferritic stainless steel having a composition consisting of, by weight, 16-35% Cr, <=0.020% C, <=0.030% N, 0.01-3.0% Si, one or more kinds among 0.01-3.0% Mo, 0.01-1.0% Cu, 0.01-1.0% Nb, 0.01-1.0% Ti, and 0.01-7.0% Al, and the balance essentially Fe with inevitable impurities to rolling, to finish annealing and pickling or to temper rolling, and then to surface polishing. In the above process, polishing is done at 150-300 deg.C, or, after the completion of polishing the steel sheet is held in the air at <=300 deg.C for >=48hr until the thickness of a passivating film reaches >=2.5nm. |
