What is grade 5 titanium alloy? Titanium Grade 5 (6AL-4V)is an alloyed titanium product containing 6% Aluminum and 4% Vanadium; is a medium strength product. This titanium grade is predominantly used in airframe and turbine engine parts; and for use in surgical implants. Technical Info Titanium 6AL â 4V ELI is an alloyed titanium product containing 6% Aluminum and 4% Vanadium, ELI (Extra Low Interstitial).