Grade 5 titanium is a widely used titanium alloy that has very high strength but relatively low ductility. It is also known as Ti-6Al-4V, which stands for 6% aluminum, 4% vanadium, and the remainder titanium. Compared to pure titanium, grade 5 has much higher tensile strength and a higher yield point. This alloy is primarily used for its strength, and it is the most widely used titanium alloy in all product forms. It is weldable and can be precipitation hardened. The main application of this alloy is in aircraft and spacecraft, and offshore use is growing. It is also used for demanding applications such as biomedical implants where a material is needed that can emulate bone and high-temperature structural applications in the aerospace industry.

Although grade 5 and grade 9 titanium alloys have 90% of their alloy composition in common, there are distinct differences between them. Grade 5 titanium is moderately superior to grade 9 titanium in some material characteristics such as shear and tensile strength, but there are serious challenges to using it for manufacturing applications where working with precision rolled coil is optimal. Typically, grade 5 titanium is used for applications that involve machining, while grade 9 titanium is used when forming is needed because there are better options in formable titanium alloys.

In summary, grade 5 titanium is a widely used titanium alloy that is known for its high strength and is primarily used in applications where strength is more important than corrosion resistance, such as in aircraft and spacecraft.