Matters needing attention for titanium tube processing?

The workability of titanium alloy is 20-40% of that of 45# steel, and the hardness is less than HB300, which will cause a strong sticking phenomenon; HB>370 is too hard to make processing difficult, and it is best to process titanium alloy with hardness HB300-370. The main reasons that affect its machinability are briefly described as follows: 1) Gas impurities (oxygen, nitrogen, hydrogen, etc.) have a great impact on the machinability of titanium alloys because titanium has high chemical activity and is easy to combine with gas impurities. When the temperature exceeds 600 degrees, titanium is oxidized to form an embrittlement layer, the so-called "structure alpha layer"; it produces hydrogen embrittlement with hydrogen, and forms hard and brittle TiN with nitrogen at high temperatures. 2) The plasticity of titanium alloy is small, which obviously affects its plastic deformation during cutting. The deformation coefficient of titanium alloy is only 1 or even less than 1, while the deformation coefficient of ordinary carbon steel is about 3. During cutting, the chip has a very small contact surface with the rake face, which makes the contact area pressure and the local temperature high, and the tool wears quickly. 3) Severe work hardening occurs when titanium alloy is processed
Ti 7Al-4Mo Titanium Bar      Gr23 Ti-6Al-4V ELI Titanium Plate      ERTi-9 Titanium Welding Wire      F2 Pure Titanium Forging