Automobile part made from titanium

Abstract

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.

Description

[0001] The present invention relates to an auto part comprised of titanium characterized by a light weight and high strength. In particular, it relates to an auto part comprised of a JIS Type 2 or Type 3 commercially pure titanium or a low alloy titanium comprised of one of these plus a small amount of Fe.[0002] Titanium materials may be classified into alloy titanium and commercially pure titanium. Among these, commercially pure titanium has the characteristics of being comparatively superior in workability as well as having a moderate degree of strength characteristics and superior corrosion resistance and being relatively easy to weld as well. It has been worked into various shapes such as medium thick plates, hot rolled and cold rolled strips, thin sheets cut from the same, welded pipes obtained by shaping and welding these thin sheets, large diameter round bars, square bars, bar and wire coils, medium and small diameter bars and wires cut from the same, and seamless pipes made ...

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