Technology So durable it's helping athletes with joint injury return to sports. Originally developed for the aerospace industry, UltimumTi is three times stronger than the conventional titanium and two times more resilient than ordinary graphite fibers. In medical science, it's an ideal material for replacing human joint structure and helping athletes bounce back into action. In sports play and out, UltimumTi delivers the large responsive energy and full-energy transfer characteristics that fulfill the "wish list" of sports-world professionals.