The most common market for 6AL-4V is aerospace. Lightweight grade 5 titanium is well suited for applications such as compressor blades, discs, and rings for jet engines; airframe components; pressure vessels; roc ket engine cases; helicopter rotor hubs and critical forgings requiring high strength-to-weight ratios. Ti-6AL-4V titanium round bar stock is also age hardenable by heat treatment to achieve even higher strengths. This biocompatible material is also well suited for medical implants. Its mechanical and physical properties allow good capacity for titanium to join with bones and other tissue.