TA5 titanium alloy, also known as α-type titanium alloy (Ti-4Al-0.005B), is a single-phase alloy composed of α-phase solid solution. It always maintains the α phase structure at general temperatures and higher practical application temperatures, so it has stable organizational properties. Compared with pure titanium, TA5 titanium alloy has higher wear resistance and oxidation resistance. In the temperature range of 500℃~600℃, it still maintains its strength and creep resistance, but its strength cannot be increased through heat treatment. However, it should be noted that the strength of TA5 titanium alloy at room temperature is not very high.

Chemical composition of titanium alloy TA5 (%)








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Mechanical properties of titanium alloy TA5


heat treatment or condition

tensile strength

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Hot-rolled and cold-rolled plates;0.5≤t≤1

annealed state(M)




Hot-rolled and cold-rolled plates;1<t≤2

annealed state(M)




Hot-rolled and cold-rolled plates;2<t≤5

annealed state(M)




Hot-rolled and cold-rolled plates;5<t≤10

annealed state(M)




Properties of TA5 titanium alloy

TA5 titanium alloy is a titanium alloy with certain characteristics and performance


High strength: Titanium alloys have high strength and good mechanical properties, and are stronger than many traditional metals.

Low Density: The relatively low density of titanium alloys makes them ideal for lightweight designs, especially in applications where weight reduction is required but high strength is required.

Good toughness: Titanium alloy has good toughness and can maintain good shape stability when subjected to impact and vibration.

Excellent corrosion resistance: Titanium alloy has good corrosion resistance and can resist the erosion of many corrosive media such as strong acids, strong alkalis and salt water.


Poor process performance: The processing performance of titanium alloy is relatively poor, including difficulty in cutting and easy absorption of impurities such as hydrogen, oxygen, nitrogen and carbon during thermal processing.

Poor wear resistance: Titanium alloys have relatively poor wear resistance, so special treatments or the addition of other materials are required in friction and wear applications in some special fields.

Complex production process: The industrial production of titanium is relatively late. Compared with other traditional metals, the preparation and processing technology of titanium alloy is relatively complex and requires high equipment and process.

Generally speaking, titanium alloys have unique advantages and some limitations. Depending on specific application needs and process requirements, titanium alloys can play an important role in many fields.

Application of TA5 titanium alloy

TA5 titanium alloy has a wide range of applications, mainly including the following aspects:

Aerospace: TA5 titanium alloy is often used to manufacture compressor parts of aircraft engines, such as blades, compressor discs, etc. At the same time, it is also used in structural parts of rockets, missiles, high-speed aircraft, etc., because titanium alloy has excellent strength, rigidity and high temperature resistance.

Industrial application: Since the mid-1960s, titanium and its alloys have been widely used in general industry. They are used to make electrodes in the electrolysis industry, condensers in power stations, heaters for petroleum refining and desalination, and environmental pollution control devices.

Corrosion-resistant structural materials: Due to their excellent corrosion resistance, titanium alloys are widely used as corrosion-resistant structural materials. In the fields of chemical industry, marine engineering, seawater desalination and other fields, titanium alloys are often used to manufacture containers, pipelines, pump bodies and other equipment to resist the erosion of corrosive media.

Other applications: In addition to the above application fields, titanium alloys are also used to produce hydrogen storage materials, such as hydrogen storage tanks, hydrogen fuel cells, etc. In addition, titanium alloys are also used in the field of shape memory alloys to manufacture medical devices, eyeglass frames, etc.