| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a titanium material for a drum for producing copper foil having a uniform and fine sheet surface metal texture with no defect with a diameter of several tens μm or less caused by plucking in polishing, and manufacturable without depending on complicated thermomechanical treatment, and a method for manufacturing the titanium material. <P>SOLUTION: A titanium sheet for the drum for producing electrolytic Cu foil contains, by mass%, 0.3-1.1% Cu, at most 0.04% Fe, at most 0.1% oxygen, and at most 0.006% hydrogen, and has an average crystal grain size of 8.2 or more, and a Vickers hardness of 115 or more and 145 or less. At a portion parallel with a sheet surface, the texture has an area ratio A/B of 3.0 or more, wherein A is the total area of crystal grains existing within an elliptic range in which a fall angle of a normal of a (0001) plane being ±45° in a direction of a rolling width direction TD is set as a major axis and the fall angle being ±25° in a direction of a final rolling direction RD is set as a minor axis in a (0001) plane pole figure of an α phase from a normal line (an ND axis) from a rolling face, and B is the total area of other crystal grains. <P>COPYRIGHT: (C)2012,JPO&INPIT |
