Compared with other titanium alloys, it has following advantages:
1. It still can keep strength, plasticity and good match under higher pressure.
2. Excellent cold and hot processing performance, cold deformation over 75%, intermediate annealing is not needed.
3. Good high temperature performance, can work at 550℃ permanent.
4. Good anti-oxidation properties that is 10 times better than industrial pure titanium.
5. This alloy is the first high strength alloy which can bear hydrothermal oil corrosion.
Due to these advantages of Beta-21S, it is used in engine compartment where possibly will be contaminated by hydrothermal oil pollution. In light of its high temperature property, it also can be made as parts in turbine engine temperature over 425℃. Based on its anti-oxidation, Ti Gr.21 can be made into high temperature pipe and pressure wire. In addition, beta 21S has fine welding performance, it can weld wherever fits for titanium alloys. Beta-21S has better thermal expansivity compatibility with composite material compared with aluminum. So Ti Beta-21S is a main base material for composite material.