The density of titanium alloy tube sheet is generally about 4.51g/cm3, which is only 60% of steel. The density of pure titanium is close to that of ordinary steel. Some high-strength titanium alloys exceed the strength of many alloy structural steels. Therefore, the specific strength (strength/density) of the titanium alloy tube sheet is much greater than other metal structural materials, and the manufactured parts have high strength, good rigidity and light weight.
At moderate temperatures, the titanium alloy tube sheet can still maintain the required strength, and can work for a long time at a temperature of 450 to 500 ℃. These two types of titanium alloys still have high specific strength in the range of 150 ℃ to 500 ℃. The specific strength of the aluminum alloy tube sheet decreases significantly at 150°C. The working temperature of titanium alloy tube sheet can reach 500℃, while that of aluminum alloy is below 200℃.
Titanium alloy tube sheet has its own excellent characteristics, and titanium alloy has gradually become one of the new important structural materials that are often used in the development of aerospace industry. Titanium alloy is between aluminum and steel in terms of specific gravity, strength and temperature range. However, titanium alloy itself has more superior characteristics, that is, it has high specific strength and, It has good seawater corrosion resistance and ultra-low temperature performance.
Titanium alloy tube sheet can still maintain its mechanical properties at low and ultra-low temperature. Titanium alloys with good low temperature performance and extremely low interstitial elements, such as TA7, can maintain a certain degree of plasticity at -253℃. Therefore, titanium alloy tube sheet is also an important low-temperature structural material.
