To provide a ferritic-austenitic stainless steel sheet to be press-formed, in which the earring that is produced when having been press-formed is small and surface defects are few.
The ferritic-austenitic stainless steel sheet to be press-formed causing the small earring has a difference between 0.2% yield strengths in a direction of 0° and in a direction of 90° with respect to a rolling direction in an amount of less than 20 MPa, a surface roughness Rz on the steel sheet of 0.5-4 μm in a direction of 90° with respect to the rolling direction, and an earring rate of less than 2%; and includes, by mass%, 0.01-0.04% C, 1.0% or less Si, 4.0-6.0% Mn, 1.0-2.0% Ni, 20.0-22.0% Cr, 0.1-1.0% Cu, 0.01-0.06% Al, 0.15-0.25% N and the balance Fe with unavoidable impurities.
TAKAHASHI AKIHIKO
FUKUMOTO SHIGEO
| JP2008291282A | 2008-12-04 | |||
| JP2006183129A | 2006-07-13 | |||
| JP2008038214A | 2008-02-21 |
Shunta Naito