Medicine mainly used titanium alloy titanium bar stock titanium implanted in the human body medical devices, prostheses or artificial organs and adjuvant therapy equipment. There are 4 titanium 6 aluminum vanadium, titanium, aluminum 2.5 5 tin, ELI 4 vanadium titanium 6 aluminum alloy. They have high specific strength and mechanical properties similar to the human bone, strength is far superior to titanium, also has titanium pipe anti-fatigue, good corrosion resistance and biocompatibility characteristics. Widely used in various prosthetic bone, bone fixation devices, dentures, dental inlay, fixed bridges.