What is titanium grade 5?

Titan Grade 5/6AL-4V9/ASTM B 348

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