1. Titanium tube has high specific strength. The density of titanium alloy is generally about 4.5g/cm3, which is only 60% of that of steel. The strength 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 titanium alloy is much higher than that of other metal structural materials, and parts with high unit strength, good rigidity and light weight can be produced. At present, titanium alloy is used for engine components, skeleton, skin, fasteners and landing gear of aircraft.
2. Titanium tube has high thermal strength. The service temperature is several times higher than that of aluminum alloy. It can still maintain the required strength at medium temperature and can work for a long time at 450-500 ℃. These two kinds of titanium alloys still have high specific strength in the range of 150 ℃ ~ 500 ℃, while the specific strength of aluminum alloys decreases significantly at 150 ℃. The working temperature of titanium alloy can reach 500 ℃, while that of aluminum alloy is below 200 ℃.
3. Titanium pipe has good corrosion resistance. The corrosion resistance of titanium alloy is much better than that of stainless steel when it works in humid atmosphere and seawater; The resistance to pitting corrosion, acid corrosion and stress corrosion is particularly strong; It has excellent corrosion resistance to alkali, chloride, chlorine organic substances, nitric acid, sulfuric acid, etc.
4. Titanium tube has good low temperature performance. Titanium alloy can still maintain its mechanical properties at low temperature and ultra-low temperature. Titanium alloys with good low temperature performance and very low interstitial elements, such as TA7, can still maintain certain plasticity at - 253 ℃. Therefore, titanium alloy is also an important low-temperature structural material.
5. Titanium tube has high chemical activity. Titanium has great chemical activity, and produces strong chemical reactions with O, N, h, Co, CO2, water vapor, ammonia, etc. in the atmosphere. When the carbon content is more than 0.2%, hard tic will be formed in the titanium alloy; When the temperature is high, the hard surface layer of tin will also be formed by interaction with n; When the temperature is above 600 ℃, titanium absorbs oxygen to form a hard layer; An embrittlement layer is also formed when the hydrogen content increases. The chemical affinity of titanium is also large, and it is easy to adhere to the friction surface
6. The titanium tube has small thermal conductivity and small elastic modulus. The elastic modulus of titanium alloy is about 1 / 2 of that of steel, so its rigidity is poor and it is easy to deform. It is not suitable for making slender rods and thin-walled parts. The rebound amount of the machined surface during cutting is large, about 2-3 times that of stainless steel, resulting in severe friction, adhesion and adhesion wear on the back surface of the tool.
Amanda
Company: Baoji Dynamic Trading Co., Ltd
Country:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
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