Since entering industrial production, titanium and bicycle have formed an indissoluble bond. The application of titanium and titanium alloy in bicycles began in Japan. In 1999, the foldable bicycle of the national bicycle industry company was the lightest bicycle in the world at that time, with a mass of only 6.5kg and the trade name of "ToRenKuRu 6500".The bicycle uses both titanium alloy frames and industrial pure titanium structural parts.
Generally, 70% ~ 80% of the transmission structure and brake parts of the light bicycles are made of aluminum alloy and 20% are made of steel. The structural parts made of titanium alloy can be used on bicycles, such as frame, speed change gear, brake disc, etc. at present, the structural frame made of titanium alloy is mainly used in racing cars and high-grade cars. General bicycles use 36 spokes, while titanium alloy bicycles only have 24 spokes. The reduction in the number of spokes not only reduces the quality of the car but also reduces the wind resistance. It can be made of pure titanium, Ti6Al4V、Ti6Al4VEL1、Ti3Al2.5V pipe manufacturing.
The titanium frame is lighter than the chrome molybdenum alloy steel frame, more comfortable to ride, and longer service life. The average mass of the titanium frame produced by Litespeed is only 1.5kg, but the price is more than 3500 US dollars/set. Campagnolo, Italy, uses titanium and titanium alloy to manufacture structural parts of racing cars, such as encapsulated transmission lock nails, left-hand nuts, pinless crankshafts, front and rear hub shafts, left and right pedal shafts, etc.
