| 摘要 |
A titanium auto part having a strength equal to the conventional JIS Type 2 and Type 3 and a phase structure enabling design of similar parts and processes and having a high residual ductility after being worked. A titanium auto part characterized by containing, by wt %, Fe: 0.15 to 0.5%, nitrogen: 0.015 to 0.04%, oxygen, and the balance of titanium and unavoidable impurities, wherein, when the Fe content is [Fe], the nitrogen content is [N], and the oxygen content is [O], the oxygen equivalent value Q=[O]+2.77 [N]+0.1 [Fe] is Q: 0.11 to 0.28%. Q: 0.11 to 0.20% is preferable. As the auto part, the invention is suitably applied to any of a muffler, exhaust pipe, motorcycle frame, motorcycle rear fork, and motorcycle front fork inner pipe.
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