| 摘要 |
A heat-resistant ferritic stainless steel plate or foil having improved toughness as well as workability is disclosed, which consists essentially of: C : not larger than 0.020%, N : not larger than 0.020%, wherein, C(%) + N(%): not larger than 0.030%, Si: not larger than 1.0%, Mn: not larger than 1.0%. or one or more of Si: larger than 1.0% but not larger than 5.0% and Mn: larger than 1.0% but not larger than 2.0%, Cr: 9.0 - 35.0%, Al: 3.0 - 8.0%, Y : 0.010 - 0.10%, Ti: 0.010 - 0.10%, Mo: 0 - 5.0%, Fe and incidental impurities: balance, and which is manufactured by cooling the hot-rolled steel plate at a cooling rate of 20 DEG C/sec. or higher immediately after hot rolling, coiling the hot-rolled steel plate at a temperature of 400 DEG C or lower, and preferably cold rolling the resulting hot-rolled steel plate until the thickness thereof reaches 50 micrometers or less, and applying Al vapor deposition to both sides of the thus-obtained foil to a thickness of 0.2 - 4.0 micrometers. |
