Titanium bars have the characteristics of small specific gravity and high strength. In this respect, the performance of titanium is much better than that of beryllium. For example, titanium is much more coriaceous than iron, but it is only half the weight of iron, and it will not rust. Titanium is slightly heavier than aluminum, but the strength is three times larger than aluminum, and its heat resistance is much greater than that of aluminum. The strength of titanium is three times more than stainless steel, one point three times more than aluminum alloy, one point six times more than the magnesium alloy, its strength is the highest in all of the metal materials.

In today's aircraft manufacturing industry aluminum magnesium alloy is the main material, it is strong and light, However, with the development of the aviation industry, the flight speed of aircraft become more and more quick, due to frictional heating, the aircraft surface temperature is getting higher and higher. At this time, aluminum magnesium alloy can not stand it, the strength will be quickly reduced. In addition to stainless steel and titanium, there is no alternative, but because of the weight of stainless steel is two times more than the titanium plate, so the high-speed aircraft materials are manufactured with titanium.

In supersonic jet aircraft, the engine and the fire wall, rack, hatch covers, etc. of fuselage are most made of titanium alloy. There are millions of fasteners on a jumbo jet, titanium content can add up to several tons or even dozens of tons. Some supersonic long-range interceptors, titanium consumption accounted for ninety-five percent of the total structure, so it can be called "titanium plane".