| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a Ti containing ferritic stainless steel hot rolled coil of a thick gauge which has enough toughness and ductility which can stably prevent a problem of material crack in a line in which a hot rolled coil is developed to be rolled. <P>SOLUTION: The Ti containing ferritic stainless steel hot rolled coil is such that a hardness is 180 HV or less, a Charpy impact value at 25°C is regulated at least 20 J/cm<SP POS="POST">2</SP>, and a sheet thickness is 5.0-12.0 mm. The hot rolled coil can be manufactured by a method as follows. A slab is hot rolled to be made to have a sheet thickness of 5.0-12.0 mm, then is taken-up at a winding temperature of 570°C or higher to be made a coil. When after the lapse of five minutes or longer from the taking-up end and a surface temperature of the coil circumference is 550°C or higher, the coil is soaked in water, and is retained for 15 minutes or longer. <P>COPYRIGHT: (C)2012,JPO&INPIT |
