| 摘要 |
PROBLEM TO BE SOLVED: To provide an Sn-containing duplex stainless steel, duplex stainless steel cast slab, and duplex stainless steel material which have satisfactory hot productivity and are inexpensive by clarifying the relation between the Sn content and the hot productivity and finding the countermeasures thereof. SOLUTION: The duplex stainless steel, duplex stainless steel cast slab, and duplex stainless steel material each contains, by mass%, 0.03% or less C, 0.05 to 1.0% Si, 0.1 to 7.0% Mn, 0.05% or less P, 0.0001 to 0.0010% S, 0.5 to 5.0% Ni, 18.0 to 25.0% Cr, 0.10 to 0.30% N, 0.05% or less Al, 0.0010 to 0.0040% Ca, 0.01 to 0.2% Sn, with the balance consisting of Fe and inevitable impurities, and has a ratio Ca/O of Ca to O contents being 0.3 to 1.0. COPYRIGHT: (C)2013,JPO&INPIT
|
