| 摘要 |
PROBLEM TO BE SOLVED: To provide a titanium thin sheet, particularly a titanium thin sheet having excellent formability such as press formability, and also to provide its manufacturing method. SOLUTION: By regulating, on the surface of the titanium sheet, the Vickers hardness at a load of 50 gf and the Vickers hardness at a load of 200 gf to 180-280 and <=170, respectively, and further regulating the thickness of oxide/- nitride film to >=250Å, the titanium thin sheet having the following characteristics can be obtained, lubricity between a die or tool and a blank at forming can be maintained without deteriorating the formability of the blank, resistance to scratching by the die or tool can be secured and excellent formability can be provided. Such a titanium sheet can be obtained by applying a prescribed annealing treatment in an oxidizing/nitriding atmosphere after removing the surface of the titanium sheet having adhering oil after cold rolling, or applying prescribed annealing treatment in an oxidizing/nitriding atmosphere after annealing or after annealing/picking.
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