Titanium is a new type of metal, titanium performance with the carbon, nitrogen, hydrogen, oxygen and other impurities content. Its characteristics are high strength, hot strength, good corrosion resistance, low temperature performance, chemical activity of large, small thermal conductivity, elastic modulus is small. 
 China, respectively, to TA, TC, TB, said. Three kinds of titanium is the most commonly used α titanium alloy; α + β titanium alloy; α best machinability of titanium alloys, α + β titanium alloy, followed by, β titanium worst. α titanium alloy, code-named TA, β titanium alloy, code-named TB, α + β titanium alloy, code-named TC. 
 By alloying and heat treatment methods to create various alloys with high mechanical properties, is an ideal space engineering structural materials. 
 Titanium Application examples: industrial manufacture of parts in addition to the use of other than pure titanium, titanium alloy is widely used. Titanium in the aviation, aerospace, chemical, shipbuilding and other industrial departments have been increasingly widely used, manufacturing gas turbine components, production of prosthetic devices and other biological materials. 
 Titanium TA4 Ti-3Al TA5 Ti-4Al-0.005B TA6 Ti-5Al TA7 Ti-5Al-2.5Sn 

 TA9 Ti-0.2Pa TA10 Ti-0.3Mo-0.8Ni TB2 Ti-5Mo-5V-8Cr-3Al 

 B3 Ti-3.5Al-10Mo-8V-1Fe B4 Ti-4Al-7Mo-10V-2Fe-1Zr TB7 Ti-32Mo 

 TC1 Ti-2Al-1.5Mn TC2 Ti-4Al-1.5Mn TC3 Ti-5Al-4V TC4 Ti-6Al-4V 

 TC6 Ti-6Al-1.5Cr-2.5Mo-0.5Fe-0.3Si TC9 Ti-6.5Al-3.5Mo-2.5Sn-0.3Si 

 TC10 Ti-6Al-6V-2Sn-0.5Cu-0.5Fe TC11 Ti-6.5Al-3.5Mo-1.5Zr-0.3Si TC12 Ti-5Al-4Mo-4Cr-2Zr-2Sn-1Nb and so on.