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About the titanium tube use

2019-05-21

The general use of Titanium alloy tube is very large, such as the production of the aircraft, then how about Titanium Tube and titanium alloy tube?


First, About the titanium alloy tube


1. The density of titanium alloy is generally about 4.51g /M3, only 60% of steel, the density of pure titanium is close to the density of ordinary steel, some high-strength titanium alloy exceeds the strength of many alloy structural steel. Therefore, the specific strength (strength/density) of titanium alloy is much larger than that of other metal structural materials, and the manufactured parts have high strength, good rigidity and light weight.


2. The use temperature is several hundred degrees higher than that of aluminum alloy. It can maintain the required strength at moderate temperature. It can work for a long time at 450~500 °C. These two types of titanium alloys are still very hot in the range of 150 °C ~ 500 °C. High specific strength, while the aluminum alloy has a significant decrease in specific strength at 150 °C. Titanium alloys can operate at temperatures up to 500 ° C and aluminum alloys at temperatures below 200 ° C.


3. Due to their excellent characteristics, the titanium alloys have gradually become one of the new important structural materials that are often used in the development of the aerospace industry. Titanium alloys are between aluminum and steel in both the specific strength and the temperature range of the specific gravity, but the titanium alloy itself has a more superior characteristic, that is, it has a higher specific strength, and Has good seawater corrosion resistance and ultra-low temperature performance.


4. Titanium alloy can maintain its mechanical properties at low temperature and ultra-low temperature. Titanium alloys with good low-temperature properties and extremely low interstitial elements, such as TA7, retain a certain degree of plasticity at -253 °C. Therefore, titanium is also an important low-temperature structural materials.


Second, the use of titanium alloy tube


1. Titanium alloy is mainly used to make aircraft engine compressor parts, followed by structural parts of rockets, missiles and high-speed aircraft. In the mid-1960s, titanium and its alloys were used in the general industry for the production of electrodes for the electrolysis industry, condensers for power stations, heaters for petroleum refining and seawater desalination, and environmental pollution control devices. Titanium and its alloys have become a corrosion resistant structural material. It is also used to produce hydrogen storage materials and shape memory alloys.


2. Titanium alloy can be divided into heat resistant alloy, high strength alloy, corrosion resistant alloy (titanium-Molybdenum, titanium-palladium alloy, etc.), low temperature alloy and special function alloy (titanium-iron hydrogen storage material and titanium-nickel memory alloy). )Wait. The composition and properties of typical alloys are shown in the table.



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