The difference between Titanium alloy TC4 and TC4ELI

TC4 titanium alloy is an α-β titanium alloy successfully developed by the United States in 1954. It contains 6% α stable element and 4% β stable element V. The main characteristics of TC4 titanium alloy are excellent comprehensive performance and good process performance. TC4 titanium alloy has moderate room temperature strength and high temperature strength, good creep resistance and thermal stability, high fatigue resistance and crack propagation resistance in seawater, as well as satisfactory fracture toughness and thermal salt stress corrosion resistance, sensitivity to hydrogen is also smaller than TC2 and TC1 alloy. It is suitable for manufacturing various parts working in wide temperature range of -196~450℃, especially the parts designed by the principle of damage tolerance limitation. TC4 titanium alloy also has excellent process plasticity and superplasticity, which is suitable for forming by various pressure processing methods, welding and mechanical processing in various ways.

TC4ELI titanium alloy

TC4ELI is an improved version of TC4,  and its main differences are different Al contents and lower interstitial elements Fe, N, H, O contents.
TC4ELI titanium alloy is an ideal material for medical surgical implants because of its good biocompatibility,  low elastic modulus, low density, good corrosion resistance, non-toxic, high yield strength, long fatigue life,  large plasticity at room temperature,  easy to form and other advantages. TC4ELI titanium alloy plate is mainly used for skull repair,  bone grafting and other aspects, which has higher requirements for its strength, fatigue life, plasticity and so on.