The change in mechanical properties versus aging time will be examined for near beta alloys Ti-10V-2Fe-3Al and Ti-5Mo-5V-5Al-3Cr and compared to beta alloys Ti-15V-3Cr-3Al-3Sn and Beta 21S. The aging times will vary for 1 hour to 24 hours. The change in mechanical properties versus aging time will be used to understand the aging reaction of the various alloys.