The titanium board null mass which is superior

摘要

PROBLEM TO BE SOLVED: To provide a titanium-sheet, in which both of isotropic stretch formability and anisotropic stretch formability are excellent more than the formability of the conventional titanium-sheet, and to provide a method for manufacturing the titanium-sheet.;SOLUTION: The titanium-sheet contains, by mass%, 0.03 to 0.08% O, 0.015 to 0.055% Fe, 0.001 to 0.02% N, 0.015% (including 0%) C, and Ti and inevitable impurities as the balance, wherein [mass% of O]+0.12×[mass% of Fe] obtained based on O and Fe contents (mass%) is 0.080, and an area ratio of crystal grains (α phase) in a 1/4 t (t is a sheet thickness) part of a rolled layer from the surface, the α phase grains having the Schmidt factor of {11-22}11-23 twinning deformation at the tension in the rolling direction of 0.35, is ≤8%.;COPYRIGHT: (C)2012,JPO&INPIT