Titanium non-toxic, high light, strength and has buy titanium bar excellent biocompatibility, is ideal for medical metallic material can be used as implants implanted in the human body. In the medical field it is still widely used Ti-6Al-4v ELI alloy. But the latter will precipitate a very small amount of vanadium and aluminum ions, reducing its cellular adaptation and potentially cause harm to humans, the problem has already caused widespread concern in the medical community. The United States in the mid-1980s began to develop non-aluminum, vanadium-free, biocompatible titanium alloy, which is used in orthopedic surgery. Japan, titanium bar the United Kingdom also done a lot of research work, and made some new progress. For example, Japan has developed a series of α + β titanium alloy with excellent biocompatibility, including Ti-15Zr-4Nb_4ta-0.2Pd, Ti-15Zr-4Nb-aTa-0.2Pd-0.20 ~ 0.05N, Ti-15Sn -4Nb-2Ta-0.2Pd and Ti-15Sn-4nb-2Ta-0.2Pd-0.20, corrosion strength of these alloys, fatigue strength and corrosion resistance are better than Ti-6Al-4v ELI. Compared with α + β titanium alloy, β titanium alloy having a higher strength levels and better notch toughness properties and is more suitable as an implant implanted.