The titanium board null mass which in high yield is superior in

摘要

PROBLEM TO BE SOLVED: To provide a titanium sheet with a high yield strength and excellent in press formability.;SOLUTION: This titanium sheet includes, by mass%, 0.15% or less Fe (except 0%), 0.15% or less O (except 0%) and the balance Ti with unavoidable impurities; and has such crystal grains that the mean value (mean deviation angle) of each deviation angle in the direction of the c-axis of each crystal grain is 0.4-2.0° with respect to the direction of an averaged c-axis of directions of c-axes of 100 crystal grains with larger sizes among crystal grains existing in a flat surface of 1 mm×1 mm. It is also preferable that the mean grain size of the crystal grains is 10-200 μm and the yield strength in the rolling direction (L-direction) of the sheet/the yield strength in a transverse direction (T-direction) to the rolling direction of the sheet is 0.75 or more.;COPYRIGHT: (C)2011,JPO&INPIT