| 摘要 |
PROBLEM TO BE SOLVED: To produce inexpensive titanium excellent in impact resistance and to provide its producing method. SOLUTION: The concentrations of O, N, C and Fe are controlled to prescribed ranges without adding alloy elements such as Al, Mo and V to secure cold workability, and on the other hand, the Vickers hardness of the cross section of a titanium formed product in a state of being work-hardened in the combination of preliminary working and annealing performed before forming into a titanium formed product or in the process thereof is controlled to a prescribed range in accordance with the componential concentrations thereof, by which a titanium formed product excellent in impact resistance is obtained.
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