The application of titanium and titanium alloys in aerospace engineering began in 1955. Titanium alloys are widely used in rocket engine housing materials in the United States. Titanium alloys are also widely used in various structural parts. The "Apollo" spacecraft has about 50 pressures Containers, 85% of which are made of titanium. Hercules III transition-level engine, after using titanium alloy propellant tank, the weight is reduced by 35%. The brackets, fixtures and fasteners of the "Apollo" spacecraft are all used Made of titanium, using a total of 68 tons of titanium. A large amount of titanium is also used in pressure vessels for aerospace engineering, the most used are Ti-6Al-4V and Ti-5Al-2.5Sn. The missile warhead is also used Titanium alloy. Most of the United States uses radiation-cooled engine nozzles, and some of these nozzles are made of titanium alloys.

The Ti3Al-based titanium alloys Ti-21Nb-14Al and Ti-24Al-14Nb-3V-0.5Mo titanium foil produced in the United States have been made into missile fins and combustion chamber nozzle seals, etc. The thermal protection of the U.S. supersonic manned aircraft The system uses Ti1100 titanium alloy as the heat-resistant tile, and the rocket carrier X-33 uses titanium alloy as the material of the large-area heat-resistant system of its fuselage leeward surface. Among them, β21S (Ti-15Mo-3Al-2.7Nb-0.2Si) has been NASA has determined the fuselage and wing panels used for the National Aerospace Shuttle. American high-tech companies use powder metallurgy to produce titanium alloy components for various missile weapons. Superplastic forming technology is used to manufacture titanium alloy missiles Shell, propellant storage tank, etc., not only reduce the weight, but also reduce the cost by 30% ~ 40%.