Titanium alloys are metals that contain a mixture of titanium and other chemical elements. For most applications it is alloyed with small amounts of aluminum and vanadium, typically 6% and 4% respectively, and for some its also alloyed with palladium. This alloys have very high tensile strength and toughness, they are light in weight, have corrosion resistance and the ability to withstand high temperatures. The heat resistance enables a heat treatment process after the alloy has been worked into its final shape but before it is put to use, allowing much easier fabrication of a high-strength products.

Titanium grade 5 is the most widely used titanium alloy. It has very high strength but relatively low ductility. Compared to pure titanium, grade 5 has much higher tensil strength and a higher yield point. Titanium grade 5 is therefore preferable when the strength is more important than the corrosion resistance. The main application of this alloy is in aircraft, spacecraft and offshore. This alloy is weldable and can be precipitation hardened.