A Detailed Explanation of the Classification of Titanium Alloys

Titanium alloys, renowned for their high strength, light weight and corrosion resistance, are widely used in fields such as aviation, medical care and chemical engineering. To better understand and apply titanium alloys, we need to have a clear understanding of their classification.
I. Classification by Annealing State
Annealed (M) titanium alloy: After annealing treatment, the internal stress of the material is released, the structure becomes more uniform, and it has good plasticity and toughness. 2. Hot-worked (R) titanium alloys: Processed at high temperatures and achieving specific microstructures and properties through heat treatment, they possess relatively high strength and hardness.
3. Cold-worked (Y) titanium alloy: It is processed at room temperature, and its strength and hardness are enhanced through cold deformation, but its plasticity is somewhat reduced.
II. Classification by Alloy Composition

α titanium alloy: mainly contains aluminum, tin and zirconium elements, and has high plasticity and toughness, suitable for applications that require high formability.
2. Beta titanium alloys: Mainly containing molybdenum, chromium and vanadium elements, they possess high strength and excellent heat treatment properties, and are suitable for parts that bear heavy loads.
3. α+β titanium alloy: Containing both α and β stabilizing elements, it combines the advantages of α and β titanium alloys and has high strength and toughness.

III. Classification by Use Structural titanium alloys: mainly used for manufacturing various mechanical parts, such as aircraft landing gear, fasteners, etc., and are required to have high strength and toughness.
2. Heat-resistant titanium alloys: They can maintain stable performance in high-temperature environments and are suitable for high-temperature working conditions such as engine components.
3. Corrosion-resistant titanium alloys: They possess excellent corrosion resistance and are suitable for corrosive environments such as in the chemical industry and marine applications.
By understanding the classification of titanium alloys, we can select the appropriate titanium alloy materials based on actual needs. Different types of titanium alloys have differences in performance and application, so the correct selection of titanium alloys is crucial for ensuring product quality and performance.