| 摘要 |
<p>The invention relates to a hot-rolled, or hot-rolled and annealed, metal sheet which is made of ferritic stainless steel manufactured by a method including at least two asymmetrical hot-rolling steps, the steel including, by weight percent: 0.001% = C = 0.08%, N = 0.08%, 0.02% = Mn = 1.1 %, Si = 1.1 %, P = 0.04%, S = 0.015%, 10.5% = Cr = 25%, Mo = 3%, Cu = 1%, Ti =1 %, Zr = 1%, Nb = 1%, the remainder of the composition consisting of iron and unavoidable impurities resulting from the production process. The metal sheet has a mean grain size, at the mid-thickness in the rolling direction dac, which is less than or equal to 50 µm.</p> |
